List of nuclides

<h2 id="introduction">Introduction</h2>
There are presently 251 known <a href="/facts/Stable_nuclide/vC0VVvqN">stable nuclides</a>. Many of these in theory could decay through <a href="/facts/Spontaneous_fission/0QuJoVKI">spontaneous fission</a>, <a href="/facts/Alpha_decay/rCsHNIUE">alpha decay</a>, <a href="/facts/Double_beta_decay/ILmpbfqS">double beta decay</a>, etc. with a very long <a href="/facts/Half-life/kGVH8BAB">half-life</a>, but this has not yet been observed. Thus, the number of stable nuclides is subject to change if some of these 251 have radioactive decay observed in the future. In this article, the "stable" nuclides are divided into three tables: one for nuclides that are theoretically stable (meaning no decay mode is possible) except to spontaneous fission, which is not considered plausible in this mass range; one for nuclides that can theoretically undergo forms of decay other than spontaneous fission but have no published lower bound on lifetime from experimental evaluations; and one for nuclides that can theoretically decay and have been examined without detecting any decay, allowing a lower bound to be published. In this last table, where a decay has been predicted theoretically but never observed experimentally (either directly or by finding an excess of the daughter), the theoretical decay mode is given in parentheses, and "> (lifetime in years)" is shown in the half-life column to show this lower limit in <a href="/facts/Scientific_notation/YgyYEmq8">scientific notation</a>. Such nuclides are considered to be "stable", also called "observationally stable" indicating the tentative nature of the conclusion, until some decay has been observed. For example, <a href="/facts/Tellurium-123/cE0X04xU">tellurium-123</a> was reported to be radioactive, but the same experimental group later retracted this report, and it is again listed as stable.
The next group is the primordial radioactive nuclides. These have been measured to be radioactive, or decay products have been identified in natural samples (tellurium-128, barium-130). There are 35 of these (see these nuclides), of which 25 have half-lives longer than 1013 years. For most of these 25, decay is difficult to observe, and for most purposes they can be regarded as effectively stable. <a href="/facts/Bismuth-209/Bxu7JrUs">Bismuth-209</a> is notable as it is the only naturally occurring isotope of an element which was long considered stable. A further 10 nuclides, <a href="/facts/Platinum-190/G5CS1TkP">platinum-190</a>, <a href="/facts/Samarium-147/e5wQw5B0">samarium-147</a>, <a href="/facts/Lanthanum-138/dT37muIv">lanthanum-138</a>, <a href="/facts/Rubidium-87/9jc8FbaB">rubidium-87</a>, <a href="/facts/Rhenium-187/UmIoHfcT">rhenium-187</a>, <a href="/facts/Lutetium-176/yUu2IeCp">lutetium-176</a>, <a href="/facts/Thorium-232/lRb3opzg">thorium-232</a>, <a href="/facts/Uranium-238/QhcHm6q8">uranium-238</a>, <a href="/facts/Potassium-40/RMnkrhvc">potassium-40</a>, and <a href="/facts/Uranium-235/pe0RznDM">uranium-235</a>, have half-lives between 7.0×108 and 4.83×1011 years, which means they have undergone at least 0.5% depletion since the <a href="/facts/Formation_of_the_Solar_System/cgElXHpM">formation of the Solar System</a> about 4.6×109 years ago, but still exist on Earth in significant quantities. They are the primary source of <a href="/facts/Radiogenic_heating/KXP6MKk6">radiogenic heating</a> and radioactive decay products. Together, there are a total of 286 <a href="/facts/Primordial_nuclide/lFAUqHDv">primordial nuclides</a>.<a class="footnote-ref" id="fnref:2" href="#fn:2">2</a>
The list then covers the other radionuclides with half-lives longer than 1 hour, split into several tables in order of successively shorter lifetimes.
Over 60 nuclides that have half-lives too short to be primordial can be detected in nature as a result of later production by natural processes, mostly in trace amounts. These include ~44 radionuclides occurring in the <a href="/facts/Decay_chain/JvTwPNBn">decay chains</a> of primordial uranium and thorium (<a href="/facts/Radiogenic_nuclide/KXP6MKk6">radiogenic nuclides</a>), such as <a href="/facts/Radon-222/FTWdEQn0">radon-222</a>. Others are the products of interactions with energetic cosmic-rays (e.g. cosmic ray spallation) (<a href="/facts/Cosmogenic_nuclide/TlJwc4wV">cosmogenic nuclides</a>), such as carbon-14. This gives a total of about 350 naturally occurring nuclides. Other nuclides may be occasionally produced naturally by rare cosmogenic interactions or as a result of other natural nuclear reactions (<a href="/facts/Nucleogenic/fGUMBY7t">nucleogenic</a> nuclides), but are difficult to detect.
Non-primordial nuclides may also be detected in the spectra of stars; <a href="/facts/Technetium/MGYWNI5d">technetium</a> is well established,<a class="footnote-ref" id="fnref:3" href="#fn:3">3</a> and others have been claimed. The remaining nuclides are known solely from artificial <a href="/facts/Nuclear_transmutation/MjlvjsV6">nuclear transmutations</a>. Some, such as <a href="/facts/Caesium-137/NrY5Tb6j">caesium-137</a> and <a href="/facts/Krypton-85/c32MkhnV">krypton-85</a>, are found in the environment but as a result of contamination from releases of man-made <a href="/facts/Nuclear_fission_product/xJd9MXXH">nuclear fission products</a> (from nuclear weapons, nuclear reactors, and other processes). Other are produced artificially for industrial or medical purposes.

<h2 id="list-legend">List legend</h2>
Each group of radionuclides, starting with the longest-lived primordial radionuclides, is sorted by decreasing half-life, but the tables are sortable by other columns.

No. (number) column
A running positive integer for reference. This number, i.e. position in this table, might be changed in the future, especially for nuclides with short half-lives.

nuclide column
Nuclide identifiers are given by their atomic mass number A and the symbol for the corresponding chemical element (corresponding to the unique proton number). In the cases that this is not the <a href="/facts/Ground_state/ML7cfCug">ground state</a>, this is indicated by a m for <a href="/facts/Metastability/H72SMWof">metastable</a> appended to the mass number. Sorting here sorts by mass number.

Z, N column
The number of protons (Z column) and number of neutrons (N column).

energy column
The column labeled "energy" denotes the energy equivalent of the mass of a neutron minus the mass per <a href="/facts/Nucleon/6fguU9Xk">nucleon</a> of this nuclide (so all nuclides get a positive value) in <a href="/facts/Electron_volt/YMT1fqX9">MeV</a>, formally: mn − mnuclide / A, where A = Z + N is the mass number. Note that this means that a higher "energy" value actually means that the nuclide has a lower energy. The mass of the nuclide (in <a href="/facts/Dalton_(unit)/IMATU3vf">daltons</a>) is A (mn − E / k) where E is the energy, mn is 1.008664916 Da and k = 931.49410242 the conversion factor between MeV and daltons.

half-life column
The main column shows times in seconds (31,556,926 seconds = 1 <a href="/facts/Tropical_year/ASBLWNMY">tropical year</a>); a second column showing half-life in more usual units (year, day) is also provided.
Entries starting with a ">" indicates that no decay has ever been observed, with null experiments establishing lower limits for the half-life. Such elements are considered stable unless a decay can be observed (establishing an actual estimate for the half-life). Note half-lives may be imprecise estimates and can be subject to significant revision. Where the half-life is shown to a smaller than usual number of significant figures, this is usually because it is not known accurately enough to justify more significant figures.

<a href="/facts/Radioactive_decay/Ya6FVjt4">decay</a> mode column
<table><tbody><tr><td>α</td><td><a href="/facts/Alpha_decay/rCsHNIUE">α decay</a></td></tr><tr><td>β−</td><td><a href="/facts/Beta_decay/vxTBlckp">β− decay</a></td></tr><tr><td>β−β−</td><td><a href="/facts/Double_beta_decay/ILmpbfqS">double β− decay</a></td></tr><tr><td>ε</td><td><a href="/facts/Electron_capture/EIccoV1u">electron capture</a></td></tr><tr><td>β+</td><td><a href="/facts/Beta_decay/vxTBlckp">β+ decay</a></td></tr><tr><td>β+β+</td><td><a href="/facts/Double_beta_decay/ILmpbfqS">double β+ decay</a></td></tr><tr><td>SF</td><td><a href="/facts/Spontaneous_fission/0QuJoVKI">spontaneous fission</a></td></tr><tr><td>IT</td><td><a href="/facts/Nuclear_isomer/L8DHcqnk">isomeric transition</a></td></tr></tbody></table>
Decay modes in parentheses are still not observed through experiment but are, from their energy, predicted to occur. Numbers in brackets indicate probability of that decay mode occurring in %; "(tr)" indicates <0.1%. Spontaneous fission (or <a href="/facts/Cluster_decay/sIelGo3t">cluster decay</a>) is not shown as a theoretical decay mode for stable nuclides where other modes are possible (these and these). Note that beta-plus decay (technically <a href="/facts/Positron/HgV4zBzA">positron</a> emission) includes electron capture, and conversely, if positron emission is energetically possible.

decay energy column
Multiple values for (maximal) <a href="/facts/Decay_energy/g4wDGC8r">decay energy</a> are mapped to decay modes in their order. The decay energy listed is for the specific nuclide only, not for the whole <a href="/facts/Decay_chain/JvTwPNBn">decay chain</a>. It includes the energy lost to <a href="/facts/Neutrino/yGWVfSg2">neutrinos</a>.

notes column

CG
<a href="/facts/Cosmogenic_nuclide/TlJwc4wV">Cosmogenic nuclide</a>.
DP
Naturally occurring <a href="/facts/Decay_chain/JvTwPNBn">decay product</a> (of thorium-232, uranium-238, and uranium-235).
ESS
Present in the early Solar System (first few million years), but extinct now as a primordial nuclide. Inherently overlaps with cosmogenic nuclides.
FP
<a href="/facts/Nuclear_fission_product/xJd9MXXH">Nuclear fission product</a> (only those with a half-life over one day are shown).
IM
Industry or medically used radionuclide.<a class="footnote-ref" id="fnref:4" href="#fn:4">4</a>

<h2 id="full-list">Full list</h2>
<h3>Theoretically stable nuclides</h3>
Main article: <a href="/facts/Stable_nuclide/vC0VVvqN">Stable nuclide</a>
These are the theoretically stable nuclides, ordered by "energy".

<table><tbody><tr><th>No.</th><th>Nuclide</th><th>A</th><th>Z</th><th>N</th><th>Energy(MeV)</th></tr><tr><td>1</td><td>56Fe</td><td>56</td><td>26</td><td>30</td><td>9.153567</td></tr><tr><td>2</td><td>62Ni</td><td>62</td><td>28</td><td>34</td><td>9.147877</td></tr><tr><td>3</td><td>60Ni</td><td>60</td><td>28</td><td>32</td><td>9.145862</td></tr><tr><td>4</td><td>58Fe</td><td>58</td><td>26</td><td>32</td><td>9.142938</td></tr><tr><td>5</td><td>52Cr</td><td>52</td><td>24</td><td>28</td><td>9.137037</td></tr><tr><td>6</td><td>57Fe</td><td>57</td><td>26</td><td>31</td><td>9.127119</td></tr><tr><td>7</td><td>59Co</td><td>59</td><td>27</td><td>32</td><td>9.126046</td></tr><tr><td>8</td><td>54Cr</td><td>54</td><td>24</td><td>30</td><td>9.125633</td></tr><tr><td>9</td><td>61Ni</td><td>61</td><td>28</td><td>33</td><td>9.124129</td></tr><tr><td>10</td><td>55Mn</td><td>55</td><td>25</td><td>30</td><td>9.120611</td></tr><tr><td>11</td><td>64Ni</td><td>64</td><td>28</td><td>36</td><td>9.119754</td></tr><tr><td>12</td><td>66Zn</td><td>66</td><td>30</td><td>36</td><td>9.115258</td></tr><tr><td>13</td><td>53Cr</td><td>53</td><td>24</td><td>29</td><td>9.114435</td></tr><tr><td>14</td><td>63Cu</td><td>63</td><td>29</td><td>34</td><td>9.112272</td></tr><tr><td>15</td><td>65Cu</td><td>65</td><td>29</td><td>36</td><td>9.106154</td></tr><tr><td>16</td><td>68Zn</td><td>68</td><td>30</td><td>38</td><td>9.100845</td></tr><tr><td>17</td><td>50Ti</td><td>50</td><td>22</td><td>28</td><td>9.099861</td></tr><tr><td>18</td><td>51V</td><td>51</td><td>23</td><td>28</td><td>9.094884</td></tr><tr><td>19</td><td>67Zn</td><td>67</td><td>30</td><td>37</td><td>9.084468</td></tr><tr><td>20</td><td>48Ti</td><td>48</td><td>22</td><td>26</td><td>9.081488</td></tr><tr><td>21</td><td>72Ge</td><td>72</td><td>32</td><td>40</td><td>9.079465</td></tr><tr><td>22</td><td>70Ge</td><td>70</td><td>32</td><td>38</td><td>9.079372</td></tr><tr><td>23</td><td>69Ga</td><td>69</td><td>31</td><td>38</td><td>9.076078</td></tr><tr><td>24</td><td>88Sr</td><td>88</td><td>38</td><td>50</td><td>9.070438</td></tr><tr><td>25</td><td>74Ge</td><td>74</td><td>32</td><td>42</td><td>9.063522</td></tr><tr><td>26</td><td>49Ti</td><td>49</td><td>22</td><td>27</td><td>9.062323</td></tr><tr><td>27</td><td>76Se</td><td>76</td><td>34</td><td>42</td><td>9.061485</td></tr><tr><td>28</td><td>71Ga</td><td>71</td><td>31</td><td>40</td><td>9.059218</td></tr><tr><td>29</td><td>78Se</td><td>78</td><td>34</td><td>44</td><td>9.058842</td></tr><tr><td>30</td><td>90Zr</td><td>90</td><td>40</td><td>50</td><td>9.057631</td></tr><tr><td>31</td><td>89Y</td><td>89</td><td>39</td><td>50</td><td>9.056743</td></tr><tr><td>32</td><td>86Sr</td><td>86</td><td>38</td><td>48</td><td>9.054160</td></tr><tr><td>33</td><td>82Kr</td><td>82</td><td>36</td><td>46</td><td>9.054126</td></tr><tr><td>34</td><td>84Kr</td><td>84</td><td>36</td><td>48</td><td>9.052649</td></tr><tr><td>35</td><td>73Ge</td><td>73</td><td>32</td><td>41</td><td>9.048006</td></tr><tr><td>36</td><td>87Sr</td><td>87</td><td>38</td><td>49</td><td>9.046964</td></tr><tr><td>37</td><td>75As</td><td>75</td><td>33</td><td>42</td><td>9.045093</td></tr><tr><td>38</td><td>80Kr</td><td>80</td><td>36</td><td>44</td><td>9.044984</td></tr><tr><td>39</td><td>77Se</td><td>77</td><td>34</td><td>43</td><td>9.040153</td></tr><tr><td>40</td><td>85Rb</td><td>85</td><td>37</td><td>48</td><td>9.037998</td></tr><tr><td>41</td><td>91Zr</td><td>91</td><td>40</td><td>51</td><td>9.037156</td></tr><tr><td>42</td><td>83Kr</td><td>83</td><td>36</td><td>47</td><td>9.034966</td></tr><tr><td>43</td><td>79Br</td><td>79</td><td>35</td><td>44</td><td>9.034220</td></tr><tr><td>44</td><td>81Br</td><td>81</td><td>35</td><td>46</td><td>9.033979</td></tr><tr><td>45</td><td>92Zr</td><td>92</td><td>40</td><td>52</td><td>9.032783</td></tr><tr><td>46</td><td>46Ti</td><td>46</td><td>22</td><td>24</td><td>9.030532</td></tr><tr><td>47</td><td>47Ti</td><td>47</td><td>22</td><td>25</td><td>9.027336</td></tr><tr><td>48</td><td>44Ca</td><td>44</td><td>20</td><td>24</td><td>9.013793</td></tr><tr><td>49</td><td>94Mo</td><td>94</td><td>42</td><td>52</td><td>9.011856</td></tr><tr><td>50</td><td>93Nb</td><td>93</td><td>41</td><td>52</td><td>9.009051</td></tr><tr><td>51</td><td>96Mo</td><td>96</td><td>42</td><td>54</td><td>8.996229</td></tr><tr><td>52</td><td>95Mo</td><td>95</td><td>42</td><td>53</td><td>8.994564</td></tr><tr><td>53</td><td>42Ca</td><td>42</td><td>20</td><td>22</td><td>8.989116</td></tr><tr><td>54</td><td>38Ar</td><td>38</td><td>18</td><td>20</td><td>8.984870</td></tr><tr><td>55</td><td>45Sc</td><td>45</td><td>21</td><td>24</td><td>8.983945</td></tr><tr><td>56</td><td>97Mo</td><td>97</td><td>42</td><td>55</td><td>8.973806</td></tr><tr><td>57</td><td>98Ru</td><td>98</td><td>44</td><td>54</td><td>8.971572</td></tr><tr><td>58</td><td>43Ca</td><td>43</td><td>20</td><td>23</td><td>8.964551</td></tr><tr><td>59</td><td>100Ru</td><td>100</td><td>44</td><td>56</td><td>8.963517</td></tr><tr><td>60</td><td>99Ru</td><td>99</td><td>44</td><td>55</td><td>8.956348</td></tr><tr><td>61</td><td>34S</td><td>34</td><td>16</td><td>18</td><td>8.951675</td></tr><tr><td>62</td><td>40Ar</td><td>40</td><td>18</td><td>22</td><td>8.947325</td></tr><tr><td>63</td><td>102Ru</td><td>102</td><td>44</td><td>58</td><td>8.944837</td></tr><tr><td>64</td><td>101Ru</td><td>101</td><td>44</td><td>57</td><td>8.942117</td></tr><tr><td>65</td><td>41K</td><td>41</td><td>19</td><td>22</td><td>8.938623</td></tr><tr><td>66</td><td>39K</td><td>39</td><td>19</td><td>20</td><td>8.938174</td></tr><tr><td>67</td><td>104Pd</td><td>104</td><td>46</td><td>58</td><td>8.930847</td></tr><tr><td>68</td><td>37Cl</td><td>37</td><td>17</td><td>20</td><td>8.929760</td></tr><tr><td>69</td><td>103Rh</td><td>103</td><td>45</td><td>58</td><td>8.925910</td></tr><tr><td>70</td><td>36S</td><td>36</td><td>16</td><td>20</td><td>8.923108</td></tr><tr><td>71</td><td>106Pd</td><td>106</td><td>46</td><td>60</td><td>8.919460</td></tr><tr><td>72</td><td>105Pd</td><td>105</td><td>46</td><td>59</td><td>8.913356</td></tr><tr><td>73</td><td>35Cl</td><td>35</td><td>17</td><td>18</td><td>8.900285</td></tr><tr><td>74</td><td>108Pd</td><td>108</td><td>46</td><td>62</td><td>8.900253</td></tr><tr><td>75</td><td>107Ag</td><td>107</td><td>47</td><td>60</td><td>8.897514</td></tr><tr><td>76</td><td>110Cd</td><td>110</td><td>48</td><td>62</td><td>8.892718</td></tr><tr><td>77</td><td>30Si</td><td>30</td><td>14</td><td>16</td><td>8.885761</td></tr><tr><td>78</td><td>109Ag</td><td>109</td><td>47</td><td>62</td><td>8.885300</td></tr><tr><td>79</td><td>32S</td><td>32</td><td>16</td><td>16</td><td>8.884318</td></tr><tr><td>80</td><td>33S</td><td>33</td><td>16</td><td>17</td><td>8.876964</td></tr><tr><td>81</td><td>31P</td><td>31</td><td>15</td><td>16</td><td>8.859744</td></tr><tr><td>82</td><td>28Si</td><td>28</td><td>14</td><td>14</td><td>8.838935</td></tr><tr><td>83</td><td>29Si</td><td>29</td><td>14</td><td>15</td><td>8.826327</td></tr><tr><td>84</td><td>112Cd</td><td>112</td><td>48</td><td>64</td><td>8.880077</td></tr><tr><td>85</td><td>111Cd</td><td>111</td><td>48</td><td>63</td><td>8.875445</td></tr><tr><td>86</td><td>114Sn</td><td>114</td><td>50</td><td>64</td><td>8.865722</td></tr><tr><td>87</td><td>113In</td><td>113</td><td>49</td><td>64</td><td>8.862212</td></tr><tr><td>88</td><td>116Sn</td><td>116</td><td>50</td><td>66</td><td>8.860362</td></tr><tr><td>89</td><td>115Sn</td><td>115</td><td>50</td><td>65</td><td>8.854249</td></tr><tr><td>90</td><td>118Sn</td><td>118</td><td>50</td><td>68</td><td>8.848073</td></tr><tr><td>91</td><td>117Sn</td><td>117</td><td>50</td><td>67</td><td>8.843977</td></tr><tr><td>92</td><td>120Sn</td><td>120</td><td>50</td><td>70</td><td>8.830537</td></tr><tr><td>93</td><td>119Sn</td><td>119</td><td>50</td><td>69</td><td>8.828201</td></tr><tr><td>94</td><td>121Sb</td><td>121</td><td>51</td><td>70</td><td>8.811783</td></tr><tr><td>95</td><td>122Te</td><td>122</td><td>52</td><td>70</td><td>8.811606</td></tr><tr><td>96</td><td>124Te</td><td>124</td><td>52</td><td>72</td><td>8.801364</td></tr><tr><td>97</td><td>123Sb</td><td>123</td><td>51</td><td>72</td><td>8.796727</td></tr><tr><td>98</td><td>126Te</td><td>126</td><td>52</td><td>74</td><td>8.786126</td></tr><tr><td>99</td><td>125Te</td><td>125</td><td>52</td><td>73</td><td>8.783505</td></tr><tr><td>100</td><td>128Xe</td><td>128</td><td>54</td><td>74</td><td>8.773359</td></tr><tr><td>101</td><td>127I</td><td>127</td><td>53</td><td>74</td><td>8.771981</td></tr><tr><td>102</td><td>130Xe</td><td>130</td><td>54</td><td>76</td><td>8.762725</td></tr><tr><td>103</td><td>129Xe</td><td>129</td><td>54</td><td>75</td><td>8.758904</td></tr><tr><td>104</td><td>132Xe</td><td>132</td><td>54</td><td>78</td><td>8.747695</td></tr><tr><td>105</td><td>131Xe</td><td>131</td><td>54</td><td>77</td><td>8.746253</td></tr><tr><td>106</td><td>134Ba</td><td>134</td><td>56</td><td>78</td><td>8.735133</td></tr><tr><td>107</td><td>133Cs</td><td>133</td><td>55</td><td>78</td><td>8.733515</td></tr><tr><td>108</td><td>136Ba</td><td>136</td><td>56</td><td>80</td><td>8.724908</td></tr><tr><td>109</td><td>135Ba</td><td>135</td><td>56</td><td>79</td><td>8.722072</td></tr><tr><td>110</td><td>137Ba</td><td>137</td><td>56</td><td>81</td><td>8.711628</td></tr><tr><td>111</td><td>138Ba</td><td>138</td><td>56</td><td>82</td><td>8.710904</td></tr><tr><td>112</td><td>27Al</td><td>27</td><td>13</td><td>14</td><td>8.708242</td></tr><tr><td>113</td><td>140Ce</td><td>140</td><td>58</td><td>82</td><td>8.700494</td></tr><tr><td>114</td><td>139La</td><td>139</td><td>57</td><td>82</td><td>8.698892</td></tr><tr><td>115</td><td>26Mg</td><td>26</td><td>12</td><td>14</td><td>8.694981</td></tr><tr><td>116</td><td>141Pr</td><td>141</td><td>59</td><td>82</td><td>8.681405</td></tr><tr><td>117</td><td>142Nd</td><td>142</td><td>60</td><td>82</td><td>8.676646</td></tr><tr><td>118</td><td>24Mg</td><td>24</td><td>12</td><td>12</td><td>8.651911</td></tr><tr><td>119</td><td>25Mg</td><td>25</td><td>12</td><td>13</td><td>8.599047</td></tr><tr><td>120</td><td>156Gd</td><td>156</td><td>64</td><td>92</td><td>8.536342</td></tr><tr><td>121</td><td>157Gd</td><td>157</td><td>64</td><td>93</td><td>8.522478</td></tr><tr><td>122</td><td>158Gd</td><td>158</td><td>64</td><td>94</td><td>8.518775</td></tr><tr><td>123</td><td>159Tb</td><td>159</td><td>65</td><td>94</td><td>8.508680</td></tr><tr><td>124</td><td>23Na</td><td>23</td><td>11</td><td>12</td><td>8.485675</td></tr><tr><td>125</td><td>163Dy</td><td>163</td><td>66</td><td>97</td><td>8.478607</td></tr><tr><td>126</td><td>164Dy</td><td>164</td><td>66</td><td>98</td><td>8.473604</td></tr><tr><td>127</td><td>22Ne</td><td>22</td><td>10</td><td>12</td><td>8.436087</td></tr><tr><td>128</td><td>20Ne</td><td>20</td><td>10</td><td>10</td><td>8.423422</td></tr><tr><td>129</td><td>16O</td><td>16</td><td>8</td><td>8</td><td>8.367390</td></tr><tr><td>130</td><td>21Ne</td><td>21</td><td>10</td><td>11</td><td>8.344280</td></tr><tr><td>131</td><td>19F</td><td>19</td><td>9</td><td>10</td><td>8.149612</td></tr><tr><td>132</td><td>17O</td><td>17</td><td>8</td><td>9</td><td>8.118904</td></tr><tr><td>133</td><td>18O</td><td>18</td><td>8</td><td>10</td><td>8.114744</td></tr><tr><td>134</td><td>12C</td><td>12</td><td>6</td><td>6</td><td>8.071327</td></tr><tr><td>135</td><td>15N</td><td>15</td><td>7</td><td>8</td><td>8.064594</td></tr><tr><td>136</td><td>14N</td><td>14</td><td>7</td><td>7</td><td>7.866827</td></tr><tr><td>137</td><td>13C</td><td>13</td><td>6</td><td>7</td><td>7.830943</td></tr><tr><td>138</td><td>4He</td><td>4</td><td>2</td><td>2</td><td>7.465077</td></tr><tr><td>139</td><td>11B</td><td>11</td><td>5</td><td>6</td><td>7.283337</td></tr><tr><td>140</td><td>10B</td><td>10</td><td>5</td><td>5</td><td>6.866257</td></tr><tr><td>141</td><td>9Be</td><td>9</td><td>4</td><td>5</td><td>6.810483</td></tr><tr><td>142</td><td>7Li</td><td>7</td><td>3</td><td>4</td><td>5.941599</td></tr><tr><td>143</td><td>6Li</td><td>6</td><td>3</td><td>3</td><td>5.723527</td></tr><tr><td>144</td><td>3He</td><td>3</td><td>2</td><td>1</td><td>3.094327</td></tr><tr><td>145</td><td>2H</td><td>2</td><td>1</td><td>1</td><td>1.503327</td></tr><tr><td>146</td><td>1H</td><td>1</td><td>1</td><td>0</td><td>0.782327</td></tr></tbody></table>
<h3>Observationally stable nuclides having theoretical decay modes other than spontaneous fission (no lower bounds)</h3>
Ordered by "energy".

<table><tbody><tr><th>No.</th><th>Nuclide</th><th>A</th><th>Z</th><th>N</th><th>Energy</th><th>Decay mode</th><th>Decay energy(MeV)</th></tr><tr><td>147</td><td> 80Se</td><td>80</td><td>34</td><td>46</td><td>9.043326</td><td>(β−β−)</td><td>0.134</td></tr><tr><td>148</td><td> 86Kr</td><td>86</td><td>36</td><td>50</td><td>9.039532</td><td>(β−β−)</td><td>1.256</td></tr><tr><td>149</td><td> 84Sr</td><td>84</td><td>38</td><td>46</td><td>9.031375</td><td>(β+β+)</td><td>1.787</td></tr><tr><td>150</td><td>102Pd</td><td>102</td><td>46</td><td>56</td><td>8.933337</td><td>(β+β+)</td><td>1.172</td></tr><tr><td>151</td><td>36Ar</td><td>36</td><td>18</td><td>18</td><td>8.911105</td><td>(β+β+)</td><td>0.433</td></tr><tr><td>152</td><td>122Sn</td><td>122</td><td>50</td><td>72</td><td>8.808590</td><td>(β−β−)</td><td>0.366</td></tr><tr><td>153</td><td>150Sm</td><td>150</td><td>62</td><td>88</td><td>8.585043</td><td>(α)</td><td>1.449</td></tr><tr><td>154</td><td>152Sm</td><td>152</td><td>62</td><td>90</td><td>8.563227</td><td>(α)</td><td>0.220</td></tr><tr><td>155</td><td>154Gd</td><td>154</td><td>64</td><td>90</td><td>8.549985</td><td>(α)</td><td>0.081</td></tr><tr><td>156</td><td>155Gd</td><td>155</td><td>64</td><td>91</td><td>8.536341</td><td>(α)</td><td>0.081</td></tr><tr><td>157</td><td>164Er</td><td>164</td><td>68</td><td>96</td><td>8.473462</td><td>(β+β+, α)</td><td>0.024, 1.304</td></tr><tr><td>158</td><td>165Ho</td><td>165</td><td>67</td><td>98</td><td>8.464689</td><td>(α)</td><td>0.139</td></tr><tr><td>159</td><td>166Er</td><td>166</td><td>68</td><td>98</td><td>8.462482</td><td>(α)</td><td>0.831</td></tr><tr><td>160</td><td>167Er</td><td>167</td><td>68</td><td>99</td><td>8.450350</td><td>(α)</td><td>0.666</td></tr><tr><td>161</td><td>168Er</td><td>168</td><td>68</td><td>100</td><td>8.446308</td><td>(α)</td><td>0.553</td></tr><tr><td>162</td><td>169Tm</td><td>169</td><td>69</td><td>100</td><td>8.433931</td><td>(α)</td><td>1.200</td></tr><tr><td>163</td><td>170Yb</td><td>170</td><td>70</td><td>100</td><td>8.428792</td><td>(α)</td><td>1.738</td></tr><tr><td>164</td><td>171Yb</td><td>171</td><td>70</td><td>101</td><td>8.418182</td><td>(α)</td><td>1.559</td></tr><tr><td>165</td><td>172Yb</td><td>172</td><td>70</td><td>102</td><td>8.415864</td><td>(α)</td><td>1.310</td></tr><tr><td>166</td><td>173Yb</td><td>173</td><td>70</td><td>103</td><td>8.404023</td><td>(α)</td><td>0.946</td></tr><tr><td>167</td><td>174Yb</td><td>174</td><td>70</td><td>104</td><td>8.398624</td><td>(α)</td><td>0.740</td></tr><tr><td>168</td><td>175Lu</td><td>175</td><td>71</td><td>104</td><td>8.386589</td><td>(α)</td><td>1.620</td></tr><tr><td>169</td><td>181Ta</td><td>181</td><td>73</td><td>108</td><td>8.338961</td><td>(α)</td><td>1.526</td></tr><tr><td>170</td><td>185Re</td><td>185</td><td>75</td><td>110</td><td>8.308204</td><td>(α)</td><td>2.195</td></tr><tr><td>171</td><td>191Ir</td><td>191</td><td>77</td><td>114</td><td>8.263508</td><td>(α)</td><td>2.084</td></tr><tr><td>172</td><td>194Pt</td><td>194</td><td>78</td><td>116</td><td>8.250519</td><td>(α)</td><td>1.504</td></tr><tr><td>173</td><td>193Ir</td><td>193</td><td>77</td><td>116</td><td>8.250259</td><td>(α)</td><td>1.017</td></tr><tr><td>174</td><td>195Pt</td><td>195</td><td>78</td><td>117</td><td>8.239516</td><td>(α)</td><td>1.158</td></tr><tr><td>175</td><td>196Pt</td><td>196</td><td>78</td><td>118</td><td>8.237896</td><td>(α)</td><td>0.794</td></tr><tr><td>176</td><td>197Au</td><td>197</td><td>79</td><td>118</td><td>8.229404</td><td>(α)</td><td>0.954</td></tr><tr><td>177</td><td>198Hg</td><td>198</td><td>80</td><td>118</td><td>8.227663</td><td>(α)</td><td>1.383</td></tr><tr><td>178</td><td>199Hg</td><td>199</td><td>80</td><td>119</td><td>8.219805</td><td>(α)</td><td>0.824</td></tr><tr><td>179</td><td>200Hg</td><td>200</td><td>80</td><td>120</td><td>8.218848</td><td>(α)</td><td>0.718</td></tr><tr><td>180</td><td>201Hg</td><td>201</td><td>80</td><td>121</td><td>8.208956</td><td>(α)</td><td>0.334</td></tr><tr><td>181</td><td>202Hg</td><td>202</td><td>80</td><td>122</td><td>8.206703</td><td>(α)</td><td>0.136</td></tr><tr><td>182</td><td>203Tl</td><td>203</td><td>81</td><td>122</td><td>8.198230</td><td>(α)</td><td>0.911</td></tr><tr><td>183</td><td>204Hg</td><td>204</td><td>80</td><td>124</td><td>8.192358</td><td>(β−β−)</td><td>0.416</td></tr><tr><td>184</td><td>205Tl</td><td>205</td><td>81</td><td>124</td><td>8.187526</td><td>(α)</td><td>0.157</td></tr></tbody></table>
<h3>Observationally stable nuclides having theoretical decay modes other than spontaneous fission, for which those decays have experimental lower bounds</h3>
Ordered by lower bound on half-life; in most cases this does not reflect the probable half-life but only our ability to measure it.

<table><tbody><tr><th>No.</th><th>Nuclide</th><th>A</th><th>Z</th><th>N</th><th>Energy</th><th>Half-life(seconds)</th><th>Half-life(years)<a class="footnote-ref" id="fnref:5" href="#fn:5">5</a></th><th>Decay mode</th><th>Decay energy(MeV)</th></tr><tr><td>185</td><td>134Xe</td><td>134</td><td>54</td><td>80</td><td>8.728973</td><td>> 8.8×1029</td><td>> 2.8×1022<a class="footnote-ref" id="fnref:6" href="#fn:6">6</a></td><td>(β−β−)</td><td>0.825</td></tr><tr><td>186</td><td>40Ca</td><td>40</td><td>20</td><td>20</td><td>8.942485</td><td>> 3.1×1029</td><td>> 9.9×1021<a class="footnote-ref" id="fnref:7" href="#fn:7">7</a></td><td>(β+β+)</td><td>0.194</td></tr><tr><td>187</td><td>184W</td><td>184</td><td>74</td><td>110</td><td>8.319737</td><td>> 2.8×1029</td><td>> 8.9×1021<a class="footnote-ref" id="fnref:8" href="#fn:8">8</a></td><td>(α)</td><td>1.656</td></tr><tr><td>188</td><td>182W</td><td>182</td><td>74</td><td>108</td><td>8.336424</td><td>> 2.4×1029</td><td>> 7.7×1021<a class="footnote-ref" id="fnref:9" href="#fn:9">9</a></td><td>(α)</td><td>1.772</td></tr><tr><td>189</td><td>208Pb</td><td>208</td><td>82</td><td>126</td><td>8.175888</td><td>> 8.2×1028</td><td>> 2.6×1021<a class="footnote-ref" id="fnref:10" href="#fn:10">10</a></td><td>(α)</td><td>0.519</td></tr><tr><td>190</td><td>206Pb</td><td>206</td><td>82</td><td>124</td><td>8.186791</td><td>> 7.9×1028</td><td>> 2.5×1021<a class="footnote-ref" id="fnref:11" href="#fn:11">11</a></td><td>(α)</td><td>1.137</td></tr><tr><td>191</td><td>126Xe</td><td>126</td><td>54</td><td>72</td><td>8.779010</td><td>> 6.0×1028</td><td>> 1.9×1021<a class="footnote-ref" id="fnref:12" href="#fn:12">12</a></td><td>(β+β+)</td><td>0.897</td></tr><tr><td>192</td><td>207Pb</td><td>207</td><td>82</td><td>125</td><td>8.179791</td><td>> 6.0×1028</td><td>> 1.9×1021<a class="footnote-ref" id="fnref:13" href="#fn:13">13</a></td><td>(α)</td><td>0.391</td></tr><tr><td>193</td><td>120Te</td><td>120</td><td>52</td><td>68</td><td>8.816369</td><td>> 5.0×1028</td><td>> 1.6×1021<a class="footnote-ref" id="fnref:14" href="#fn:14">14</a></td><td>(β+β+)</td><td>1.700</td></tr><tr><td>194</td><td>106Cd</td><td>106</td><td>48</td><td>58</td><td>8.893327</td><td>> 3.5×1028</td><td>> 1.1×1021<a class="footnote-ref" id="fnref:15" href="#fn:15">15</a></td><td>(β+β+)</td><td>2.770</td></tr><tr><td>195</td><td>58Ni</td><td>58</td><td>28</td><td>30</td><td>9.109736</td><td>> 2.2×1028</td><td>> 7.0×1020<a class="footnote-ref" id="fnref:16" href="#fn:16">16</a></td><td>(β+β+)</td><td>1.926</td></tr><tr><td>196</td><td>183W</td><td>183</td><td>74</td><td>109</td><td>8.324699</td><td>> 2.1×1028</td><td>> 6.7×1020<a class="footnote-ref" id="fnref:17" href="#fn:17">17</a></td><td>(α)</td><td>1.680</td></tr><tr><td>197</td><td>104Ru</td><td>104</td><td>44</td><td>60</td><td>8.918337</td><td>> 2.0×1028</td><td>> 6.5×1020<a class="footnote-ref" id="fnref:18" href="#fn:18">18</a></td><td>(β−β−)</td><td>1.300</td></tr><tr><td>198</td><td>54Fe</td><td>54</td><td>26</td><td>28</td><td>9.113040</td><td>> 1.4×1028</td><td>> 4.4×1020<a class="footnote-ref" id="fnref:19" href="#fn:19">19</a></td><td>(β+β+)</td><td>0.680</td></tr><tr><td>199</td><td>132Ba</td><td>132</td><td>56</td><td>76</td><td>8.741288</td><td>> 9.5×1027</td><td>> 3.0×1020<a class="footnote-ref" id="fnref:20" href="#fn:20">20</a></td><td>(β+β+)</td><td>0.846</td></tr><tr><td>200</td><td>110Pd</td><td>110</td><td>46</td><td>64</td><td>8.874500</td><td>> 9.1×1027</td><td>> 2.9×1020<a class="footnote-ref" id="fnref:21" href="#fn:21">21</a></td><td>(β−β−)</td><td>2.000</td></tr><tr><td>201</td><td>92Mo</td><td>92</td><td>42</td><td>50</td><td>9.014860</td><td>> 6.0×1027</td><td>> 1.9×1020<a class="footnote-ref" id="fnref:22" href="#fn:22">22</a></td><td>(β+β+)</td><td>1.649</td></tr><tr><td>202</td><td>204Pb</td><td>204</td><td>82</td><td>122</td><td>8.194414</td><td>> 4.4×1027</td><td>> 1.4×1020<a class="footnote-ref" id="fnref:23" href="#fn:23">23</a></td><td>(α)</td><td>1.972</td></tr><tr><td>203</td><td>112Sn</td><td>112</td><td>50</td><td>62</td><td>8.862944</td><td>> 3.1×1027</td><td>> 9.7×1019<a class="footnote-ref" id="fnref:24" href="#fn:24">24</a></td><td>(β+β+)</td><td>1.922</td></tr><tr><td>204</td><td>96Ru</td><td>96</td><td>44</td><td>52</td><td>8.967911</td><td>> 2.5×1027</td><td>> 8.0×1019<a class="footnote-ref" id="fnref:25" href="#fn:25">25</a></td><td>(β+β+)</td><td>2.719</td></tr><tr><td>205</td><td>192Os</td><td>192</td><td>76</td><td>116</td><td>8.258202</td><td>> 1.7×1027</td><td>> 5.3×1019<a class="footnote-ref" id="fnref:26" href="#fn:26">26</a></td><td>(β−β−, α)</td><td>0.413, 0.362</td></tr><tr><td>206</td><td>198Pt</td><td>198</td><td>78</td><td>120</td><td>8.222378</td><td>> 1.0×1027</td><td>> 3.2×1019<a class="footnote-ref" id="fnref:27" href="#fn:27">27</a></td><td>(β−β−, α)</td><td>1.047, 0.087</td></tr><tr><td>207</td><td>160Gd</td><td>160</td><td>64</td><td>96</td><td>8.496009</td><td>> 9.8×1026</td><td>> 3.1×1019<a class="footnote-ref" id="fnref:28" href="#fn:28">28</a></td><td>(β−β−)</td><td>1.729</td></tr><tr><td>208</td><td>144Sm</td><td>144</td><td>62</td><td>82</td><td>8.640577</td><td>> 4.4×1026</td><td>> 1.4×1019<a class="footnote-ref" id="fnref:29" href="#fn:29">29</a></td><td>(β+β+)</td><td>1.781</td></tr><tr><td>209</td><td>190Os</td><td>190</td><td>76</td><td>114</td><td>8.275045</td><td>> 3.8×1026</td><td>> 1.2×1019<a class="footnote-ref" id="fnref:30" href="#fn:30">30</a></td><td>(α)</td><td>1.378</td></tr><tr><td>210</td><td>64Zn</td><td>64</td><td>30</td><td>34</td><td>9.102634</td><td>> 3.5×1026</td><td>> 1.1×1019<a class="footnote-ref" id="fnref:31" href="#fn:31">31</a></td><td>(β+β+)</td><td>1.096</td></tr><tr><td>211</td><td>74Se</td><td>74</td><td>34</td><td>40</td><td>9.047175</td><td>> 2.2×1026</td><td>> 7.0×1018<a class="footnote-ref" id="fnref:32" href="#fn:32">32</a></td><td>(β+β+)</td><td>1.209</td></tr><tr><td>212</td><td>186W</td><td>186</td><td>74</td><td>112</td><td>8.299873</td><td>> 1.3×1026</td><td>> 4.1×1018<a class="footnote-ref" id="fnref:33" href="#fn:33">33</a></td><td>(α)</td><td>1.123</td></tr><tr><td>213</td><td>70Zn</td><td>70</td><td>30</td><td>40</td><td>9.065109</td><td>> 1.2×1026</td><td>> 3.8×1018<a class="footnote-ref" id="fnref:34" href="#fn:34">34</a></td><td>(β−β−)</td><td>0.998</td></tr><tr><td>214</td><td>188Os</td><td>188</td><td>76</td><td>112</td><td>8.290138</td><td>> 1.0×1026</td><td>> 3.3×1018<a class="footnote-ref" id="fnref:35" href="#fn:35">35</a></td><td>(α)</td><td>2.143</td></tr><tr><td>215</td><td>143Nd</td><td>143</td><td>60</td><td>83</td><td>8.658792</td><td>> 9.8×1025</td><td>> 3.1×1018<a class="footnote-ref" id="fnref:36" href="#fn:36">36</a></td><td>(α)</td><td>0.521</td></tr><tr><td>216</td><td>148Nd</td><td>148</td><td>60</td><td>88</td><td>8.594388</td><td>> 9.5×1025</td><td>> 3.0×1018<a class="footnote-ref" id="fnref:37" href="#fn:37">37</a></td><td>(β−β−, α)</td><td>1.929, 0.599</td></tr><tr><td>217</td><td>142Ce</td><td>142</td><td>58</td><td>84</td><td>8.666666</td><td>> 9.1×1025</td><td>> 2.9×1018<a class="footnote-ref" id="fnref:38" href="#fn:38">38</a></td><td>(β−β−, α)</td><td>1.417, 1.298</td></tr><tr><td>218</td><td>179Hf</td><td>179</td><td>72</td><td>107</td><td>8.353293</td><td>> 8.5×1025</td><td>> 2.7×1018<a class="footnote-ref" id="fnref:39" href="#fn:39">39</a></td><td>(α)</td><td>1.806</td></tr><tr><td>219</td><td>196Hg</td><td>196</td><td>80</td><td>116</td><td>8.233710</td><td>> 7.9×1025</td><td>> 2.5×1018<a class="footnote-ref" id="fnref:40" href="#fn:40">40</a></td><td>(β+β+, α)</td><td>0.820, 2.027</td></tr><tr><td>220</td><td>154Sm</td><td>154</td><td>62</td><td>92</td><td>8.541857</td><td>> 7.3×1025</td><td>> 2.3×1018<a class="footnote-ref" id="fnref:41" href="#fn:41">41</a></td><td>(β−β−)</td><td>1.251</td></tr><tr><td>221</td><td>146Nd</td><td>146</td><td>60</td><td>86</td><td>8.625649</td><td>> 5.0×1025</td><td>> 1.6×1018<a class="footnote-ref" id="fnref:42" href="#fn:42">42</a></td><td>(β−β−, α)</td><td>0.070, 1.182</td></tr><tr><td>222</td><td>50Cr</td><td>50</td><td>24</td><td>26</td><td>9.076517</td><td>> 4.1×1025</td><td>> 1.3×1018<a class="footnote-ref" id="fnref:43" href="#fn:43">43</a></td><td>(β+β+)</td><td>1.167</td></tr><tr><td>223</td><td>178Hf</td><td>178</td><td>72</td><td>106</td><td>8.365958</td><td>> 4.1×1025</td><td>> 1.3×1018<a class="footnote-ref" id="fnref:44" href="#fn:44">44</a></td><td>(α)</td><td>2.083</td></tr><tr><td>224</td><td>177Hf</td><td>177</td><td>72</td><td>105</td><td>8.370139</td><td>> 3.5×1025</td><td>> 1.1×1018<a class="footnote-ref" id="fnref:45" href="#fn:45">45</a></td><td>(α)</td><td>2.245</td></tr><tr><td>225</td><td>156Dy</td><td>156</td><td>66</td><td>90</td><td>8.523443</td><td>> 3.2×1025</td><td>> 1.0×1018<a class="footnote-ref" id="fnref:46" href="#fn:46">46</a></td><td>(β+β+, α)</td><td>2.011, 1.758</td></tr><tr><td>226</td><td>153Eu</td><td>153</td><td>63</td><td>90</td><td>8.550893</td><td>> 1.8×1025</td><td>> 5.5×1017<a class="footnote-ref" id="fnref:47" href="#fn:47">47</a></td><td>(α)</td><td>0.274</td></tr><tr><td>227</td><td>180Hf</td><td>180</td><td>72</td><td>108</td><td>8.347930</td><td>> 1.5×1025</td><td>> 4.6×1017<a class="footnote-ref" id="fnref:48" href="#fn:48">48</a></td><td>(α)</td><td>1.283</td></tr><tr><td>228</td><td>108Cd</td><td>108</td><td>48</td><td>60</td><td>8.897735</td><td>> 1.3×1025</td><td>> 4.1×1017<a class="footnote-ref" id="fnref:49" href="#fn:49">49</a></td><td>(β+β+)</td><td>0.272</td></tr><tr><td>229</td><td>170Er</td><td>170</td><td>68</td><td>102</td><td>8.424945</td><td>> 1.3×1025</td><td>> 4.1×1017<a class="footnote-ref" id="fnref:50" href="#fn:50">50</a></td><td>(β−β−, α)</td><td>0.654, 0.050</td></tr><tr><td>230</td><td>138Ce</td><td>138</td><td>58</td><td>80</td><td>8.705878</td><td>> 1.3×1025</td><td>> 4.0×1017<a class="footnote-ref" id="fnref:51" href="#fn:51">51</a></td><td>(β+β+)</td><td>0.694</td></tr><tr><td>231</td><td>180<a href="/facts/Nuclear_isomer/L8DHcqnk">m</a>Ta</td><td>180</td><td>73</td><td>107</td><td>8.342767</td><td>> 9.1×1024</td><td>> 2.9×1017<a class="footnote-ref" id="fnref:52" href="#fn:52">52</a></td><td>(β−, ε, IT, α)</td><td>0.783, 0.929, 2.103</td></tr><tr><td>232</td><td>176Hf</td><td>176</td><td>72</td><td>104</td><td>8.381427</td><td>> 8.5×1024</td><td>> 2.7×1017<a class="footnote-ref" id="fnref:53" href="#fn:53">53</a></td><td>(α)</td><td>2.255</td></tr><tr><td>233</td><td>46Ca</td><td>46</td><td>20</td><td>26</td><td>9.009047</td><td>> 5.7×1024</td><td>> 1.8×1017<a class="footnote-ref" id="fnref:54" href="#fn:54">54</a></td><td>(β−β−)</td><td>0.988</td></tr><tr><td>234</td><td>176Yb</td><td>176</td><td>70</td><td>106</td><td>8.375271</td><td>> 5.0×1024</td><td>> 1.6×1017<a class="footnote-ref" id="fnref:55" href="#fn:55">55</a></td><td>(β−β−, α)</td><td>1.083, 0.570</td></tr><tr><td>235</td><td>94Zr</td><td>94</td><td>40</td><td>54</td><td>8.999698</td><td>> 3.5×1024</td><td>> 1.1×1017<a class="footnote-ref" id="fnref:56" href="#fn:56">56</a></td><td>(β−β−)</td><td>1.144</td></tr><tr><td>236</td><td>124Sn</td><td>124</td><td>50</td><td>74</td><td>8.782914</td><td>> 3.2×1024</td><td>> 1.0×1017<a class="footnote-ref" id="fnref:57" href="#fn:57">57</a></td><td>(β−β−)</td><td>2.287</td></tr><tr><td>237</td><td>162Dy</td><td>162</td><td>66</td><td>96</td><td>8.492234</td><td>> 3.2×1024</td><td>> 1.0×1017<a class="footnote-ref" id="fnref:58" href="#fn:58">58</a></td><td>(α)</td><td>0.085</td></tr><tr><td>238</td><td>136Ce</td><td>136</td><td>58</td><td>78</td><td>8.707122</td><td>> 3.0×1024</td><td>> 9.6×1016<a class="footnote-ref" id="fnref:59" href="#fn:59">59</a></td><td>(β+β+)</td><td>2.419</td></tr><tr><td>239</td><td>114Cd</td><td>114</td><td>48</td><td>66</td><td>8.860985</td><td>> 2.9×1024</td><td>> 9.2×1016<a class="footnote-ref" id="fnref:60" href="#fn:60">60</a></td><td>(β−β−)</td><td>0.540</td></tr><tr><td>240</td><td>123Te</td><td>123</td><td>52</td><td>71</td><td>8.796302</td><td>> 2.9×1024</td><td>> 9.2×1016<a class="footnote-ref" id="fnref:61" href="#fn:61">61</a></td><td>(ε)</td><td>0.052</td></tr><tr><td>241</td><td>145Nd</td><td>145</td><td>60</td><td>85</td><td>8.632963</td><td>> 1.9×1024</td><td>> 6.0×1016<a class="footnote-ref" id="fnref:62" href="#fn:62">62</a></td><td>(α)</td><td>1.578</td></tr><tr><td>242</td><td>192Pt</td><td>192</td><td>78</td><td>114</td><td>8.260353</td><td>> 1.9×1024</td><td>> 6.0×1016<a class="footnote-ref" id="fnref:63" href="#fn:63">63</a></td><td>(α)</td><td>2.418</td></tr><tr><td>243</td><td>161Dy</td><td>161</td><td>66</td><td>95</td><td>8.494067</td><td>> 1.1×1024</td><td>> 3.5×1016<a class="footnote-ref" id="fnref:64" href="#fn:64">64</a></td><td>(α)</td><td>0.344</td></tr><tr><td>244</td><td>160Dy</td><td>160</td><td>66</td><td>94</td><td>8.506816</td><td>> 2.7×1023</td><td>> 8.5×1015<a class="footnote-ref" id="fnref:65" href="#fn:65">65</a></td><td>(α)</td><td>0.439</td></tr><tr><td>245</td><td>189Os</td><td>189</td><td>76</td><td>113</td><td>8.277599</td><td>> 1.1×1023</td><td>> 3.5×1015<a class="footnote-ref" id="fnref:66" href="#fn:66">66</a></td><td>(α)</td><td>1.976</td></tr><tr><td>246</td><td>187Os</td><td>187</td><td>76</td><td>111</td><td>8.291746</td><td>> 1.0×1023</td><td>> 3.2×1015<a class="footnote-ref" id="fnref:67" href="#fn:67">67</a></td><td>(α)</td><td>2.720</td></tr><tr><td>247</td><td>149Sm</td><td>149</td><td>62</td><td>87</td><td>8.589058</td><td>> 6.3×1022</td><td>> 2.0×1015<a class="footnote-ref" id="fnref:68" href="#fn:68">68</a></td><td>(α)</td><td>1.870</td></tr><tr><td>248</td><td>158Dy</td><td>158</td><td>66</td><td>92</td><td>8.516973</td><td>> 3.2×1022</td><td>> 1.0×1015<a class="footnote-ref" id="fnref:69" href="#fn:69">69</a></td><td>(β+β+, α)</td><td>0.283, 0.875</td></tr><tr><td>249</td><td>162Er</td><td>162</td><td>68</td><td>94</td><td>8.480852</td><td>> 4.4×1021</td><td>> 1.4×1014<a class="footnote-ref" id="fnref:70" href="#fn:70">70</a></td><td>(β+β+, α)</td><td>1.844, 1.646</td></tr><tr><td>250</td><td>168Yb</td><td>168</td><td>70</td><td>98</td><td>8.437845</td><td>> 4.1×1021</td><td>> 1.3×1014<a class="footnote-ref" id="fnref:71" href="#fn:71">71</a></td><td>(β+β+, α)</td><td>1.422, 1.951</td></tr><tr><td>251</td><td>98Mo</td><td>98</td><td>42</td><td>56</td><td>8.970426</td><td>> 3.2×1021</td><td>> 1.0×1014<a class="footnote-ref" id="fnref:72" href="#fn:72">72</a></td><td>(β−β−)</td><td>0.112</td></tr></tbody></table>
<h3>Primordial radioactive nuclides (half-life > 108 years)</h3>
Main article: <a href="/facts/Primordial_nuclide/lFAUqHDv">Primordial nuclide</a>
Ordered by half-life, data selected from

<ul><li>Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). <a href="https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf">"The NUBASE2020 evaluation of nuclear properties"</a> (PDF). Chinese Physics C. 45 (3): 030001. <a href="/facts/Doi_(identifier)/muM9Etpq">doi</a>:<a href="https://doi.org/10.1088%2F1674-1137%2Fabddae">10.1088/1674-1137/abddae</a>.</li></ul>
<table><tbody><tr><th>No.</th><th>Nuclide</th><th>A</th><th>Z</th><th>N</th><th>Energy</th><th>Half-life(seconds)</th><th>Half-life(years)<a class="footnote-ref" id="fnref:73" href="#fn:73">73</a></th><th>Decay mode</th><th>Decay energy(MeV)</th></tr><tr><td>252</td><td><a href="/facts/Isotopes_of_tellurium/cE0X04xU">128Te</a></td><td>128</td><td>52</td><td>76</td><td>8.743261</td><td>6.94×1031</td><td>2.2×1024</td><td>β−β−</td><td>0.868</td></tr><tr><td>253</td><td><a href="/facts/Isotopes_of_xenon/Yz78R52h">124Xe</a></td><td>124</td><td>54</td><td>70</td><td>8.778264</td><td>5.68×1029</td><td>1.8×1022</td><td>εε</td><td>2.864</td></tr><tr><td>254</td><td><a href="/facts/Isotopes_of_krypton/8hRKYepJ">78Kr</a></td><td>78</td><td>36</td><td>42</td><td>9.022349</td><td>2.90×1029</td><td>9.2×1021</td><td>εε</td><td>2.846</td></tr><tr><td>255</td><td><a href="/facts/Isotopes_of_xenon/Yz78R52h">136Xe</a></td><td>136</td><td>54</td><td>82</td><td>8.706805</td><td>7.5×1028</td><td>2.38×1021</td><td>β−β−</td><td>2.462</td></tr><tr><td>256</td><td><a href="/facts/Isotopes_of_germanium/kLqa6bcf">76Ge</a></td><td>76</td><td>32</td><td>44</td><td>9.034656</td><td>5.642×1028</td><td>1.8×1021</td><td>β−β−</td><td>2.039</td></tr><tr><td>257</td><td><a href="/facts/Isotopes_of_barium/qajGloJP">130Ba</a></td><td>130</td><td>56</td><td>74</td><td>8.742574</td><td>3.79×1028</td><td>1.2×1021</td><td>εε</td><td>2.620</td></tr><tr><td>258</td><td><a href="/facts/Isotopes_of_tellurium/cE0X04xU">130Te</a></td><td>130</td><td>52</td><td>78</td><td>8.766578</td><td>2.496×1028</td><td>7.91×1020</td><td>β−β−</td><td>2.530</td></tr><tr><td>259</td><td><a href="/facts/Isotopes_of_selenium/vHHSImg2">82Se</a></td><td>82</td><td>34</td><td>48</td><td>9.017596</td><td>2.764×1027</td><td>8.76×1019</td><td>β−β−</td><td>2.995</td></tr><tr><td>260</td><td><a href="/facts/Calcium-48/cqqfNkMY">48Ca</a></td><td>48</td><td>20</td><td>28</td><td>8.992452</td><td>1.766×1027</td><td>5.6×1019</td><td>β−β−</td><td>4.274</td></tr><tr><td>261</td><td><a href="/facts/Isotopes_of_cadmium/2F42oNDz">116Cd</a></td><td>116</td><td>48</td><td>68</td><td>8.836146</td><td>8.489×1026</td><td>2.69×1019</td><td>β−β−</td><td>2.809</td></tr><tr><td>262</td><td><a href="/facts/Isotopes_of_bismuth/DrbTkEzW">209Bi</a></td><td>209</td><td>83</td><td>126</td><td>8.158689</td><td>6.343×1026</td><td>2.01×1019</td><td>α</td><td>3.137</td></tr><tr><td>263</td><td><a href="/facts/Isotopes_of_zirconium/NzDqkTRf">96Zr</a></td><td>96</td><td>40</td><td>56</td><td>8.961359</td><td>7.384×1026</td><td>2.34×1019</td><td>β−β−</td><td>3.348</td></tr><tr><td>264</td><td><a href="/facts/Isotopes_of_neodymium/ojKx8hWx">150Nd</a></td><td>150</td><td>60</td><td>90</td><td>8.562594</td><td>2.935×1026</td><td>9.3×1018</td><td>β−β−</td><td>3.367</td></tr><tr><td>265</td><td><a href="/facts/Isotopes_of_molybdenum/gpYnY3bx">100Mo</a></td><td>100</td><td>42</td><td>58</td><td>8.933167</td><td>2.231×1026</td><td>7.07×1018</td><td>β−β−</td><td>3.035</td></tr><tr><td>266</td><td><a href="/facts/Isotopes_of_europium/IUWzfhMI">151Eu</a></td><td>151</td><td>63</td><td>88</td><td>8.565759</td><td>1.458×1026</td><td>4.62×1018</td><td>α</td><td>1.964</td></tr><tr><td>267</td><td><a href="/facts/Isotopes_of_tungsten/hsYx9Wbb">180W</a></td><td>180</td><td>74</td><td>106</td><td>8.347127</td><td>5.018×1025</td><td>1.59×1018<a class="footnote-ref" id="fnref:74" href="#fn:74">74</a></td><td>α</td><td>2.509</td></tr><tr><td>268</td><td><a href="/facts/Isotopes_of_vanadium/R4BEw3I9">50V</a></td><td>50</td><td>23</td><td>27</td><td>9.055759</td><td>8.552×1024</td><td>2.71×1017</td><td>β+<a class="footnote-ref" id="fnref:75" href="#fn:75">75</a></td><td>2.205</td></tr><tr><td>269</td><td><a href="/facts/Isotopes_of_hafnium/4sCv7aQ6">174Hf</a></td><td>174</td><td>72</td><td>102</td><td>8.392287</td><td>1.199×1024</td><td>3.8×1016<a class="footnote-ref" id="fnref:76" href="#fn:76">76</a></td><td>α</td><td>2.497</td></tr><tr><td>270</td><td><a href="/facts/Isotopes_of_cadmium/2F42oNDz">113Cd</a></td><td>113</td><td>48</td><td>65</td><td>8.859372</td><td>2.537×1023</td><td>8.04×1015</td><td>β−</td><td>0.321</td></tr><tr><td>271</td><td><a href="/facts/Isotopes_of_samarium/e5wQw5B0">148Sm</a></td><td>148</td><td>62</td><td>86</td><td>8.607423</td><td>1.988×1023</td><td>6.3×1015</td><td>α</td><td>1.986</td></tr><tr><td>272</td><td><a href="/facts/Isotopes_of_neodymium/ojKx8hWx">144Nd</a></td><td>144</td><td>60</td><td>84</td><td>8.652947</td><td>7.227×1022</td><td>2.29×1015</td><td>α</td><td>1.905</td></tr><tr><td>273</td><td><a href="/facts/Isotopes_of_osmium/7psC8ylM">186Os</a></td><td>186</td><td>76</td><td>110</td><td>8.302508</td><td>6.312×1022</td><td>2.0×1015</td><td>α</td><td>2.823</td></tr><tr><td>274</td><td><a href="/facts/Isotopes_of_indium/4AVSfBza">115In</a></td><td>115</td><td>49</td><td>66</td><td>8.849910</td><td>1.392×1022</td><td>4.41×1014</td><td>β−</td><td>0.499</td></tr><tr><td>275</td><td><a href="/facts/Isotopes_of_gadolinium/1Ty1o8c1">152Gd</a></td><td>152</td><td>64</td><td>88</td><td>8.562868</td><td>3.408×1021</td><td>1.08×1014</td><td>α</td><td>2.203</td></tr><tr><td>276</td><td><a href="/facts/Isotopes_of_osmium/7psC8ylM">184Os</a></td><td>184</td><td>76</td><td>108</td><td>8.311850</td><td>3.53×1020</td><td>1.12×1013</td><td>α</td><td>2.963</td></tr><tr><td>277</td><td><a href="/facts/Isotopes_of_platinum/G5CS1TkP">190Pt</a></td><td>190</td><td>78</td><td>112</td><td>8.267764</td><td>1.524×1019</td><td>4.83×1011</td><td>α</td><td>3.252</td></tr><tr><td>278</td><td><a href="/facts/Samarium-147/e5wQw5B0">147Sm</a></td><td>147</td><td>62</td><td>85</td><td>8.610593</td><td>3.364×1018</td><td>1.066×1011</td><td>α</td><td>2.310</td></tr><tr><td>279</td><td><a href="/facts/Isotopes_of_lanthanum/dT37muIv">138La</a></td><td>138</td><td>57</td><td>81</td><td>8.698320</td><td>3.250×1018</td><td>1.03×1011</td><td>β+, β−</td><td>1.737, 1.044</td></tr><tr><td>280</td><td><a href="/facts/Isotopes_of_rubidium/9jc8FbaB">87Rb</a></td><td>87</td><td>37</td><td>50</td><td>9.043718</td><td>1.568×1018</td><td>4.97×1010</td><td>β−</td><td>0.283</td></tr><tr><td>281</td><td><a href="/facts/Isotopes_of_rhenium/UmIoHfcT">187Re</a></td><td>187</td><td>75</td><td>112</td><td>8.291732</td><td>1.300×1018</td><td>4.12×1010</td><td>β−</td><td>0.0026</td></tr><tr><td>282</td><td><a href="/facts/Isotopes_of_lutetium/yUu2IeCp">176Lu</a></td><td>176</td><td>71</td><td>105</td><td>8.374665</td><td>1.187×1018</td><td>3.764×1010</td><td>β−<a class="footnote-ref" id="fnref:77" href="#fn:77">77</a></td><td>1.193</td></tr><tr><td>283</td><td><a href="/facts/Thorium-232/lRb3opzg">232Th</a></td><td>232</td><td>90</td><td>142</td><td>7.918533</td><td>4.434×1017</td><td>1.406×1010</td><td>α, SF</td><td>4.083</td></tr><tr><td>284</td><td><a href="/facts/Uranium-238/QhcHm6q8">238U</a></td><td>238</td><td>92</td><td>146</td><td>7.872551</td><td>1.410×1017</td><td>4.471×109</td><td>α, SF, β−β−</td><td>4.270</td></tr><tr><td>285</td><td><a href="/facts/Potassium-40/RMnkrhvc">40K</a></td><td>40</td><td>19</td><td>21</td><td>8.909707</td><td>3.938×1016</td><td>1.25×109</td><td>β−, β+</td><td>1.311, 1.505</td></tr><tr><td>286</td><td><a href="/facts/Uranium-235/pe0RznDM">235U</a></td><td>235</td><td>92</td><td>143</td><td>7.897198</td><td>2.222×1016</td><td>7.04×108</td><td>α, SF</td><td>4.679</td></tr></tbody></table>

<h3>Radionuclides with half-lives of 10,000 years to 108 years</h3>
Ordered by half-life. Some of these are known to have been present in the early Solar System (marked "ESS", meaning the first few million years of the Solar System's history) from an excess of their decay products.<a class="footnote-ref" id="fnref:78" href="#fn:78">78</a>

<table><tbody><tr><th>No.</th><th>Nuclide</th><th>Z</th><th>N</th><th>Energy</th><th>Half-life(seconds)</th><th>Half-life(years)<a class="footnote-ref" id="fnref:79" href="#fn:79">79</a></th><th>Decay mode</th><th>Notes</th></tr><tr><td>287</td><td><a href="/facts/Isotopes_of_samarium/e5wQw5B0">146Sm</a></td><td>62</td><td>84</td><td>8.626136</td><td>2.903×1015</td><td>9.20×107<a class="footnote-ref" id="fnref:80" href="#fn:80">80</a></td><td>α</td><td>ESS<a class="footnote-ref" id="fnref:81" href="#fn:81">81</a></td></tr><tr><td>288</td><td><a href="/facts/Plutonium-244/XGtUVghF">244Pu</a></td><td>94</td><td>150</td><td>7.826221</td><td>2.566×1015</td><td>8.13×107</td><td>α, SF</td><td>interstellar,<a class="footnote-ref" id="fnref:82" href="#fn:82">82</a> ESS<a class="footnote-ref" id="fnref:83" href="#fn:83">83</a></td></tr><tr><td>289</td><td><a href="/facts/Isotopes_of_niobium/nbT6c0vs">92Nb</a></td><td>41</td><td>51</td><td>9.010980</td><td>1.095×1015</td><td>3.47×107</td><td>β+</td><td>CG,<a class="footnote-ref" id="fnref:84" href="#fn:84">84</a> ESS<a class="footnote-ref" id="fnref:85" href="#fn:85">85</a></td></tr><tr><td>290</td><td><a href="/facts/Uranium-236/1JepNWSb">236U</a></td><td>92</td><td>144</td><td>7.891470</td><td>7.391×1014</td><td>2.34×107</td><td>α, SF</td><td>DP</td></tr><tr><td>291</td><td><a href="/facts/Isotopes_of_lead/V9JFUTRo">205Pb</a></td><td>82</td><td>123</td><td>8.187279</td><td>5.459×1014</td><td>1.73×107</td><td>β+</td><td>ESS<a class="footnote-ref" id="fnref:86" href="#fn:86">86</a></td></tr><tr><td>292</td><td><a href="/facts/Iodine-129/oJDlGf5H">129I</a></td><td>53</td><td>76</td><td>8.757397</td><td>5.093×1014</td><td>1.614×107</td><td>β−</td><td>CG, FP, ESS<a class="footnote-ref" id="fnref:87" href="#fn:87">87</a></td></tr><tr><td>293</td><td><a href="/facts/Isotopes_of_curium/WnMh6VLE">247Cm</a></td><td>96</td><td>151</td><td>7.806008</td><td>4.923×1014</td><td>1.56×107</td><td>α</td><td>ESS<a class="footnote-ref" id="fnref:88" href="#fn:88">88</a></td></tr><tr><td>294</td><td><a href="/facts/Isotopes_of_hafnium/4sCv7aQ6">182Hf</a></td><td>72</td><td>110</td><td>8.324399</td><td>2.809×1014</td><td>8.90×106</td><td>β−</td><td>ESS<a class="footnote-ref" id="fnref:89" href="#fn:89">89</a></td></tr><tr><td>295</td><td><a href="/facts/Isotopes_of_palladium/deN3NNeY">107Pd</a></td><td>46</td><td>61</td><td>8.897197</td><td>2.051×1014</td><td>6.50×106</td><td>β−</td><td>FP, ESS<a class="footnote-ref" id="fnref:90" href="#fn:90">90</a></td></tr><tr><td>296</td><td><a href="/facts/Isotopes_of_technetium/WrV3Wrrs">97Tc</a></td><td>43</td><td>54</td><td>8.970503</td><td>1.329×1014</td><td>4.21×106</td><td>β+</td><td></td></tr><tr><td>297</td><td><a href="/facts/Isotopes_of_technetium/WrV3Wrrs">98Tc</a></td><td>43</td><td>55</td><td>8.953246</td><td>1.325×1014</td><td>4.20×106</td><td>β−</td><td></td></tr><tr><td>298</td><td><a href="/facts/Isotopes_of_manganese/NUERgknG">53Mn</a></td><td>25</td><td>28</td><td>9.103175</td><td>1.180×1014</td><td>3.74×106</td><td>β+</td><td>CG, ESS<a class="footnote-ref" id="fnref:91" href="#fn:91">91</a></td></tr><tr><td>299</td><td><a href="/facts/Isotopes_of_bismuth/DrbTkEzW">210mBi</a></td><td>83</td><td>127</td><td>8.140473</td><td>9.594×1013</td><td>3.04×106</td><td>α</td><td></td></tr><tr><td>300</td><td><a href="/facts/Isotopes_of_iron/GVebbg1n">60Fe</a></td><td>26</td><td>34</td><td>9.094861</td><td>8.268×1013</td><td>2.62×106</td><td>β−</td><td>CG,<a class="footnote-ref" id="fnref:92" href="#fn:92">92</a> interstellar,<a class="footnote-ref" id="fnref:93" href="#fn:93">93</a> ESS<a class="footnote-ref" id="fnref:94" href="#fn:94">94</a></td></tr><tr><td>301</td><td><a href="/facts/Neptunium-237/X3bPWwX1">237Np</a></td><td>93</td><td>144</td><td>7.881989</td><td>6.766×1013</td><td>2.14×106</td><td>α, SF</td><td>DP</td></tr><tr><td>302</td><td><a href="/facts/Isotopes_of_gadolinium/1Ty1o8c1">150Gd</a></td><td>64</td><td>86</td><td>8.576454</td><td>5.649×1013</td><td>1.79×106</td><td>α</td><td></td></tr><tr><td>303</td><td><a href="/facts/Zirconium-93/NzDqkTRf">93Zr</a></td><td>40</td><td>53</td><td>9.008069</td><td>4.828×1013</td><td>1.53×106</td><td>β−</td><td>FP</td></tr><tr><td>304</td><td><a href="/facts/Isotopes_of_dysprosium/F62g1Ep8">154Dy</a></td><td>66</td><td>88</td><td>8.528457</td><td>4.415×1013</td><td>1.40×106<a class="footnote-ref" id="fnref:95" href="#fn:95">95</a></td><td>α</td><td></td></tr><tr><td>305</td><td><a href="/facts/Beryllium-10/oz3rQBLB">10Be</a></td><td>4</td><td>6</td><td>6.810657</td><td>4.377×1013</td><td>1.387×106</td><td>β−</td><td>CG, ESS<a class="footnote-ref" id="fnref:96" href="#fn:96">96</a></td></tr><tr><td>306</td><td><a href="/facts/Caesium-135/m5AYV9tp">135Cs</a></td><td>55</td><td>80</td><td>8.720082</td><td>4.194×1013</td><td>1.33×106</td><td>β−</td><td>FP</td></tr><tr><td>307</td><td><a href="/facts/Aluminium-26/INwQYapg">26Al</a></td><td>13</td><td>13</td><td>8.540954</td><td>2.263×1013</td><td>717000</td><td>β+</td><td>CG, ESS<a class="footnote-ref" id="fnref:97" href="#fn:97">97</a></td></tr><tr><td>308</td><td><a href="/facts/Plutonium-242/o1fg0sBh">242Pu</a></td><td>94</td><td>148</td><td>7.845218</td><td>1.183×1013</td><td>375000</td><td>α, SF</td><td></td></tr><tr><td>309</td><td><a href="/facts/Isotopes_of_bismuth/DrbTkEzW">208Bi</a></td><td>83</td><td>125</td><td>8.162049</td><td>1.161×1013</td><td>368000</td><td>β+</td><td></td></tr><tr><td>310</td><td><a href="/facts/Isotopes_of_curium/WnMh6VLE">248Cm</a></td><td>96</td><td>152</td><td>7.799586</td><td>1.098×1013</td><td>348000</td><td>α, SF</td><td></td></tr><tr><td>311</td><td><a href="/facts/Chlorine-36/IqR2WJxp">36Cl</a></td><td>17</td><td>19</td><td>8.891380</td><td>9.499×1012</td><td>301000</td><td>β−, β+</td><td>CG, IM</td></tr><tr><td>312</td><td><a href="/facts/Selenium-79/3TDcPNTR">79Se</a></td><td>34</td><td>45</td><td>9.032310</td><td>9.309×1012</td><td>295000</td><td>β−</td><td>FP</td></tr><tr><td>313</td><td><a href="/facts/Uranium-234/nKrs059u">234U</a></td><td>92</td><td>142</td><td>7.908308</td><td>7.747×1012</td><td>245500</td><td>α, SF</td><td>DP</td></tr><tr><td>314</td><td><a href="/facts/Isotopes_of_krypton/8hRKYepJ">81Kr</a></td><td>36</td><td>45</td><td>9.030513</td><td>7.227×1012</td><td>229000</td><td>β+</td><td>CG</td></tr><tr><td>315</td><td><a href="/facts/Isotopes_of_tin/C3yupbqu">126Sn</a></td><td>50</td><td>76</td><td>8.754026</td><td>7.258×1012</td><td>223000</td><td>β−</td><td>FP</td></tr><tr><td>316</td><td><a href="/facts/Technetium-99/0w2EE0G2">99Tc</a></td><td>43</td><td>56</td><td>8.953379</td><td>6.662×1012</td><td>211100</td><td>β−</td><td>FP, DP</td></tr><tr><td>317</td><td><a href="/facts/Isotopes_of_rhenium/UmIoHfcT">186mRe</a></td><td>75</td><td>111</td><td>8.295958</td><td>6.312×1012</td><td>200000</td><td>IT</td><td></td></tr><tr><td>318</td><td><a href="/facts/Uranium-233/a6sMrk07">233U</a></td><td>92</td><td>141</td><td>7.912873</td><td>5.024×1012</td><td>159200</td><td>α, SF</td><td>DP</td></tr><tr><td>319</td><td><a href="/facts/Isotopes_of_neptunium/X3bPWwX1">236Np</a></td><td>93</td><td>143</td><td>7.887514</td><td>4.860×1012</td><td>154000</td><td>β+, β−, α</td><td></td></tr><tr><td>320</td><td><a href="/facts/Isotopes_of_calcium/YhuBa6LI">41Ca</a></td><td>20</td><td>21</td><td>8.928347</td><td>3.219×1012</td><td>102000</td><td>β+</td><td>CG, ESS<a class="footnote-ref" id="fnref:98" href="#fn:98">98</a></td></tr><tr><td>321</td><td><a href="/facts/Isotopes_of_nickel/3jPqldnR">59Ni</a></td><td>28</td><td>31</td><td>9.107863</td><td>2.398×1012</td><td>76000</td><td>β+</td><td></td></tr><tr><td>322</td><td><a href="/facts/Isotopes_of_thorium/lRb3opzg">230Th</a></td><td>90</td><td>140</td><td>7.937136</td><td>2.379×1012</td><td>75400</td><td>α, SF</td><td>DP</td></tr><tr><td>323</td><td><a href="/facts/Isotopes_of_lanthanum/dT37muIv">137La</a></td><td>57</td><td>80</td><td>8.707101</td><td>1.893×1012</td><td>60000</td><td>β+</td><td></td></tr><tr><td>324</td><td><a href="/facts/Isotopes_of_lead/V9JFUTRo">202Pb</a></td><td>82</td><td>120</td><td>8.199714</td><td>1.657×1012</td><td>52500</td><td>β+</td><td></td></tr><tr><td>325</td><td><a href="/facts/Isotopes_of_protactinium/AVGw4A8U">231Pa</a></td><td>91</td><td>140</td><td>7.926627</td><td>1.034×1012</td><td>32770</td><td>α, SF</td><td>DP</td></tr><tr><td>326</td><td><a href="/facts/Isotopes_of_plutonium/ASACBN4x">239Pu</a></td><td>94</td><td>145</td><td>7.868022</td><td>7.609×1011</td><td>24110</td><td>α, SF</td><td>IM, DP</td></tr><tr><td>327</td><td><a href="/facts/Isotopes_of_niobium/nbT6c0vs">94Nb</a></td><td>41</td><td>53</td><td>8.990099</td><td>6.406×1011</td><td>20300</td><td>β−</td><td>CG<a class="footnote-ref" id="fnref:99" href="#fn:99">99</a></td></tr></tbody></table>
<h3>Radionuclides with half-lives of 10 years to 10,000 years</h3>
Ordered by half-life.

<table><tbody><tr><th>No.</th><th>Nuclide</th><th>Z</th><th>N</th><th>Energy</th><th>Half-life(seconds)</th><th>Half-life(years)<a class="footnote-ref" id="fnref:100" href="#fn:100">100</a></th><th>Decay mode</th><th>Notes</th></tr><tr><td>328</td><td><a href="/facts/Isotopes_of_curium/WnMh6VLE">250Cm</a></td><td>96</td><td>154</td><td>7.779371</td><td>2.619×1011</td><td>8300</td><td>SF, α, β−</td><td></td></tr><tr><td>329</td><td><a href="/facts/Curium-245/WnMh6VLE">245Cm</a></td><td>96</td><td>149</td><td>7.822329</td><td>2.60×1011</td><td>8250</td><td>α, SF</td><td></td></tr><tr><td>330</td><td><a href="/facts/Isotopes_of_americium/aqoWt39B">243Am</a></td><td>95</td><td>148</td><td>7.836035</td><td>2.326×1011</td><td>7371</td><td>α, SF</td><td></td></tr><tr><td>331</td><td><a href="/facts/Isotopes_of_thorium/lRb3opzg">229Th</a></td><td>90</td><td>139</td><td>7.942127</td><td>2.316×1011</td><td>7339</td><td>α</td><td>DP</td></tr><tr><td>332</td><td><a href="/facts/Isotopes_of_plutonium/ASACBN4x">240Pu</a></td><td>94</td><td>146</td><td>7.862465</td><td>2.070×1011</td><td>6560</td><td>α, SF</td><td>DP</td></tr><tr><td>333</td><td><a href="/facts/Carbon-14/Ut8SBNNa">14C</a></td><td>6</td><td>8</td><td>7.855620</td><td>1.799×1011</td><td>5700</td><td>β−</td><td>CG, IM</td></tr><tr><td>334</td><td><a href="/facts/Molybdenum-93/gpYnY3bx">93Mo</a></td><td>42</td><td>51</td><td>9.004693</td><td>1.53×1011</td><td>4839<a class="footnote-ref" id="fnref:101" href="#fn:101">101</a></td><td>β+</td><td></td></tr><tr><td>335</td><td><a href="/facts/Isotopes_of_curium/WnMh6VLE">246Cm</a></td><td>96</td><td>150</td><td>7.816781</td><td>1.502×1011</td><td>4760</td><td>α, SF</td><td></td></tr><tr><td>336</td><td><a href="/facts/Isotopes_of_holmium/zNJ7HJqT">163Ho</a></td><td>67</td><td>96</td><td>8.478591</td><td>1.442×1011</td><td>4570</td><td>β+</td><td></td></tr><tr><td>337</td><td><a href="/facts/Isotopes_of_radium/T0SlGtRH">226Ra</a></td><td>88</td><td>138</td><td>7.966597</td><td>5.049×1010</td><td>1600</td><td>α</td><td>DP</td></tr><tr><td>338</td><td><a href="/facts/Isotopes_of_berkelium/RnvnlKK4">247Bk</a></td><td>97</td><td>150</td><td>7.806182</td><td>4.355×1010</td><td>1380</td><td>α</td><td></td></tr><tr><td>339</td><td><a href="/facts/Isotopes_of_holmium/zNJ7HJqT">166mHo</a></td><td>67</td><td>99</td><td>8.451273</td><td>3.787×1010</td><td>1200</td><td>β−</td><td></td></tr><tr><td>340</td><td><a href="/facts/Isotopes_of_californium/tX06MlFX">251Cf</a></td><td>98</td><td>153</td><td>7.775969</td><td>2.834×1010</td><td>898</td><td>α, SF</td><td></td></tr><tr><td>341</td><td><a href="/facts/Isotopes_of_niobium/nbT6c0vs">91Nb</a></td><td>41</td><td>50</td><td>9.023327</td><td>2.146×1010</td><td>680</td><td>β+</td><td></td></tr><tr><td>342</td><td><a href="/facts/Isotopes_of_mercury/gVVXzNeh">194Hg</a></td><td>80</td><td>114</td><td>8.237271</td><td>1.401×1010</td><td>444</td><td>β+</td><td></td></tr><tr><td>343</td><td><a href="/facts/Isotopes_of_silver/f4jsguS6">108mAg</a></td><td>47</td><td>61</td><td>8.881439</td><td>1.382×1010</td><td>437.9</td><td>β+, IT</td><td></td></tr><tr><td>344</td><td><a href="/facts/Americium-241/HnXXm1nx">241Am</a></td><td>95</td><td>146</td><td>7.851676</td><td>1.364×1010</td><td>432.2</td><td>α, SF</td><td>IM</td></tr><tr><td>345</td><td><a href="/facts/Isotopes_of_californium/tX06MlFX">249Cf</a></td><td>98</td><td>151</td><td>7.791305</td><td>1.108×1010</td><td>351.1</td><td>α, SF</td><td></td></tr><tr><td>346</td><td><a href="/facts/Isotopes_of_argon/BhxtyJGu">39Ar</a></td><td>18</td><td>21</td><td>8.923686</td><td>8.489×109</td><td>269</td><td>β−</td><td>CG</td></tr><tr><td>347</td><td><a href="/facts/Isotopes_of_iridium/F1zVVPRq">192mIr</a></td><td>77</td><td>115</td><td>8.251875</td><td>7.605×109</td><td>241</td><td>IT</td><td></td></tr><tr><td>348</td><td><a href="/facts/Isotopes_of_terbium/W0Wxkne3">158Tb</a></td><td>65</td><td>93</td><td>8.511055</td><td>5.680×109</td><td>180</td><td>β+, β−</td><td></td></tr><tr><td>349</td><td><a href="/facts/Isotopes_of_americium/aqoWt39B">242mAm</a></td><td>95</td><td>147</td><td>7.841913</td><td>4.450×109</td><td>141</td><td>IT, α, SF</td><td></td></tr><tr><td>350</td><td><a href="/facts/Isotopes_of_silicon/8NzaY3wR">32Si</a></td><td>14</td><td>18</td><td>8.823856</td><td>4.166×109</td><td>132</td><td>β−</td><td>CG</td></tr><tr><td>351</td><td><a href="/facts/Isotopes_of_polonium/bIdUTjCm">209Po</a></td><td>84</td><td>125</td><td>8.149633</td><td>3.913×109</td><td>124</td><td>α, β+</td><td></td></tr><tr><td>352</td><td><a href="/facts/Isotopes_of_nickel/3jPqldnR">63Ni</a></td><td>28</td><td>35</td><td>9.111210</td><td>3.159×109</td><td>101</td><td>β−</td><td>IM</td></tr><tr><td>353</td><td><a href="/facts/Isotopes_of_samarium/e5wQw5B0">151Sm</a></td><td>62</td><td>89</td><td>8.565251</td><td>2.840×109</td><td>90.0</td><td>β−</td><td>FP</td></tr><tr><td>354</td><td><a href="/facts/Isotopes_of_plutonium/ASACBN4x">238Pu</a></td><td>94</td><td>144</td><td>7.877358</td><td>2.768×109</td><td>87.7</td><td>α, SF</td><td>IM, DP</td></tr><tr><td>355</td><td><a href="/facts/Isotopes_of_gadolinium/1Ty1o8c1">148Gd</a></td><td>64</td><td>84</td><td>8.586706</td><td>2.74×109</td><td>86.9<a class="footnote-ref" id="fnref:102" href="#fn:102">102</a></td><td>α</td><td></td></tr><tr><td>356</td><td><a href="/facts/Isotopes_of_terbium/W0Wxkne3">157Tb</a></td><td>65</td><td>92</td><td>8.522096</td><td>2.241×109</td><td>71.0</td><td>β+</td><td></td></tr><tr><td>357</td><td><a href="/facts/Isotopes_of_uranium/zWIQ6MVL">232U</a></td><td>92</td><td>140</td><td>7.922143</td><td>2.174×109</td><td>68.9</td><td>α, SF</td><td></td></tr><tr><td>358</td><td><a href="/facts/Isotopes_of_titanium/EkvlaFew">44Ti</a></td><td>22</td><td>22</td><td>8.924702</td><td>1.893×109</td><td>59.1</td><td>β+</td><td></td></tr><tr><td>359</td><td><a href="/facts/Isotopes_of_platinum/G5CS1TkP">193Pt</a></td><td>78</td><td>115</td><td>8.249965</td><td>1.578×109</td><td>50.0</td><td>β+</td><td></td></tr><tr><td>360</td><td><a href="/facts/Isotopes_of_tin/C3yupbqu">121mSn</a></td><td>50</td><td>71</td><td>8.808499</td><td>1.385×109</td><td>43.89</td><td>IT, β−</td><td></td></tr><tr><td>361</td><td><a href="/facts/Isotopes_of_europium/IUWzfhMI">150Eu</a></td><td>63</td><td>87</td><td>8.569974</td><td>1.164×109</td><td>36.89</td><td>β+</td><td></td></tr><tr><td>362</td><td><a href="/facts/Isotopes_of_argon/BhxtyJGu">42Ar</a></td><td>18</td><td>24</td><td>8.890923</td><td>1.038×109</td><td>32.9</td><td>β−</td><td></td></tr><tr><td>363</td><td><a href="/facts/Isotopes_of_bismuth/DrbTkEzW">207Bi</a></td><td>83</td><td>124</td><td>8.168209</td><td>1.038×109</td><td>31.6</td><td>β+</td><td></td></tr><tr><td>364</td><td><a href="/facts/Isotopes_of_hafnium/4sCv7aQ6">178m2Hf</a></td><td>72</td><td>106</td><td></td><td>9.776×108</td><td>31</td><td>IT</td><td></td></tr><tr><td>365</td><td><a href="/facts/Caesium-137/NrY5Tb6j">137Cs</a></td><td>55</td><td>82</td><td>8.703047</td><td>9.477×108</td><td>30.1</td><td>β−</td><td>FP, IM</td></tr><tr><td>366</td><td><a href="/facts/Isotopes_of_curium/WnMh6VLE">243Cm</a></td><td>96</td><td>147</td><td>7.836004</td><td>9.183×108</td><td>29.1</td><td>α, β+, SF</td><td></td></tr><tr><td>367</td><td><a href="/facts/Strontium-90/VJNoC5eR">90Sr</a></td><td>38</td><td>52</td><td>9.026239</td><td>9.120×108</td><td>28.9</td><td>β−</td><td>FP, IM</td></tr><tr><td>368</td><td><a href="/facts/Isotopes_of_lead/V9JFUTRo">210Pb</a></td><td>82</td><td>128</td><td>8.141462</td><td>7.006×108</td><td>22.2</td><td>β−, α</td><td>DP, IM</td></tr><tr><td>369</td><td><a href="/facts/Isotopes_of_actinium/vnv59EsB">227Ac</a></td><td>89</td><td>138</td><td>7.957447</td><td>6.871×108</td><td>21.77</td><td>β−, α</td><td>DP</td></tr><tr><td>370</td><td><a href="/facts/Isotopes_of_curium/WnMh6VLE">244Cm</a></td><td>96</td><td>148</td><td>7.831763</td><td>5.712×108</td><td>18.1</td><td>α, SF</td><td></td></tr><tr><td>371</td><td><a href="/facts/Isotopes_of_promethium/V6UzIbHz">145Pm</a></td><td>61</td><td>84</td><td>8.631838</td><td>5.586×108</td><td>17.7</td><td>β+, α</td><td></td></tr><tr><td>372</td><td><a href="/facts/Isotopes_of_niobium/nbT6c0vs">93mNb</a></td><td>41</td><td>52</td><td></td><td>5.084×108</td><td>16.1</td><td>IT</td><td></td></tr><tr><td>373</td><td><a href="/facts/Isotopes_of_plutonium/ASACBN4x">241Pu</a></td><td>94</td><td>147</td><td>7.851590</td><td>4.510×108</td><td>14.3</td><td>β−, α, SF</td><td></td></tr><tr><td>374</td><td><a href="/facts/Isotopes_of_cadmium/2F42oNDz">113mCd</a></td><td>48</td><td>65</td><td></td><td>4.380×108</td><td>13.9</td><td>β−, IT</td><td>FP</td></tr><tr><td>375</td><td><a href="/facts/Isotopes_of_europium/IUWzfhMI">152Eu</a></td><td>63</td><td>89</td><td>8.550897</td><td>4.262×108</td><td>13.51</td><td>β+, β−</td><td></td></tr><tr><td>376</td><td><a href="/facts/Isotopes_of_californium/tX06MlFX">250Cf</a></td><td>98</td><td>152</td><td>7.786640</td><td>4.128×108</td><td>13.08</td><td>α, SF</td><td></td></tr><tr><td>377</td><td><a href="/facts/Tritium/HWSa6EHy">3H</a></td><td>1</td><td>2</td><td>3.087994</td><td>3.888×108</td><td>12.32</td><td>β−</td><td>CG, IM</td></tr><tr><td>378</td><td><a href="/facts/Isotopes_of_krypton/8hRKYepJ">85Kr</a></td><td>36</td><td>49</td><td>9.029919</td><td>3.384×108</td><td>10.72</td><td>β−</td><td>FP, IM</td></tr><tr><td>379</td><td><a href="/facts/Isotopes_of_barium/qajGloJP">133Ba</a></td><td>56</td><td>77</td><td>8.729624</td><td>3.319×108</td><td>10.52</td><td>β+</td><td></td></tr></tbody></table>
<h3>Radionuclide with unknown half-life</h3>
No decay has been observed, see element page. Not primordial so does not qualify as "observationally stable".

<table><tbody><tr><th>No.</th><th>Nuclide</th><th>Z</th><th>N</th><th>Energy(MeV)</th><th>Half-life(seconds)</th><th>Half-life(years)<a class="footnote-ref" id="fnref:103" href="#fn:103">103</a></th><th>Decay modes</th><th>Notes</th></tr><tr><td>380</td><td><a href="/facts/Isotopes_of_berkelium/RnvnlKK4">248Bk</a></td><td>97</td><td>151</td><td>7.796811</td><td>> 2.84×108</td><td>> 9 y</td><td>α, β−, β+</td><td></td></tr></tbody></table>
<h3>Radionuclides with half-lives of 1 day to 10 years</h3>
Ordered by half-life.

<table><tbody><tr><th>No.</th><th>Nuclide</th><th>Z</th><th>N</th><th>Energy</th><th>Half-life(seconds)</th><th>Half-life<a class="footnote-ref" id="fnref:104" href="#fn:104">104</a></th><th>Decay modes</th><th>Notes</th></tr><tr><td>381</td><td><a href="/facts/Isotopes_of_europium/IUWzfhMI">154Eu</a></td><td>63</td><td>91</td><td>8.537200</td><td>2.711×108</td><td>8.60 y</td><td>β−, β+</td><td></td></tr><tr><td>382</td><td><a href="/facts/Isotopes_of_osmium/7psC8ylM">194Os</a></td><td>76</td><td>118</td><td>8.238508</td><td>1.893×108</td><td>6.0 y</td><td>β−</td><td></td></tr><tr><td>383</td><td><a href="/facts/Isotopes_of_radium/T0SlGtRH">228Ra</a></td><td>88</td><td>140</td><td>7.944390</td><td>1.815×108</td><td>5.75 y</td><td>β−</td><td>DP</td></tr><tr><td>384</td><td><a href="/facts/Isotopes_of_promethium/V6UzIbHz">146Pm</a></td><td>61</td><td>85</td><td>8.615574</td><td>1.745×108</td><td>5.53 y</td><td>β+, β−</td><td></td></tr><tr><td>385</td><td><a href="/facts/Cobalt-60/hjDPVA8M">60Co</a></td><td>27</td><td>33</td><td>9.098811</td><td>1.663×108</td><td>5.27 y</td><td>β−</td><td>IM</td></tr><tr><td>386</td><td><a href="/facts/Isotopes_of_europium/IUWzfhMI">155Eu</a></td><td>63</td><td>92</td><td>8.534711</td><td>1.500×108</td><td>4.75 y</td><td>β−</td><td>FP</td></tr><tr><td>387</td><td><a href="/facts/Isotopes_of_thallium/7BEwqp8j">204Tl</a></td><td>81</td><td>123</td><td>8.190671</td><td>1.193×108</td><td>3.78 y</td><td>β−, β+</td><td>IM</td></tr><tr><td>388</td><td><a href="/facts/Isotopes_of_lutetium/yUu2IeCp">174Lu</a></td><td>71</td><td>103</td><td>8.390726</td><td>1.045×108</td><td>3.31 y</td><td>β+</td><td></td></tr><tr><td>389</td><td><a href="/facts/Isotopes_of_rhodium/fYAb2dz8">101Rh</a></td><td>45</td><td>56</td><td>8.936753</td><td>1.041×108</td><td>3.3 y</td><td>β+</td><td></td></tr><tr><td>390</td><td><a href="/facts/Isotopes_of_rhodium/fYAb2dz8">102mRh</a></td><td>45</td><td>57</td><td>8.920680</td><td>9.152×107</td><td>2.9 y</td><td>β+, IT</td><td></td></tr><tr><td>391</td><td><a href="/facts/Isotopes_of_polonium/bIdUTjCm">208Po</a></td><td>84</td><td>124</td><td>8.155315</td><td>9.145×107</td><td>2.898 y</td><td>α, β+</td><td></td></tr><tr><td>392</td><td><a href="/facts/Isotopes_of_plutonium/ASACBN4x">236Pu</a></td><td>94</td><td>142</td><td>7.889536</td><td>9.019×107</td><td>2.858 y</td><td>α, SF</td><td></td></tr><tr><td>393</td><td><a href="/facts/Isotopes_of_antimony/QMxb6D0V">125Sb</a></td><td>51</td><td>74</td><td>8.777367</td><td>8.705×107</td><td>2.759 y</td><td>β−</td><td>FP</td></tr><tr><td>394</td><td><a href="/facts/Isotopes_of_iron/GVebbg1n">55Fe</a></td><td>26</td><td>29</td><td>9.116407</td><td>8.637×107</td><td>2.737 y</td><td>β+</td><td></td></tr><tr><td>395</td><td><a href="/facts/Isotopes_of_californium/tX06MlFX">252Cf</a></td><td>98</td><td>154</td><td>7.769605</td><td>8.347×107</td><td>2.645 y</td><td>α, SF</td><td>IM</td></tr><tr><td>396</td><td><a href="/facts/Isotopes_of_promethium/V6UzIbHz">147Pm</a></td><td>61</td><td>86</td><td>8.609068</td><td>8.279×107</td><td>2.624 y</td><td>β−</td><td>FP, DP</td></tr><tr><td>397</td><td><a href="/facts/Isotopes_of_sodium/dGhdEPWX">22Na</a></td><td>11</td><td>11</td><td>8.306891</td><td>8.213×107</td><td>2.603 y</td><td>β+</td><td>CG</td></tr><tr><td>398</td><td><a href="/facts/Isotopes_of_caesium/m5AYV9tp">134Cs</a></td><td>55</td><td>79</td><td>8.719768</td><td>6.517×107</td><td>2.065 y</td><td>β−, β+</td><td>FP</td></tr><tr><td>399</td><td><a href="/facts/Isotopes_of_thulium/eqq1cw1P">171Tm</a></td><td>69</td><td>102</td><td>8.417620</td><td>6.059×107</td><td>1.92 y</td><td>β−</td><td></td></tr><tr><td>400</td><td><a href="/facts/Isotopes_of_thorium/lRb3opzg">228Th</a></td><td>90</td><td>138</td><td>7.953906</td><td>6.033×107</td><td>1.912 y</td><td>α</td><td>DP</td></tr><tr><td>401</td><td><a href="/facts/Isotopes_of_hafnium/4sCv7aQ6">172Hf</a></td><td>72</td><td>100</td><td>8.399252</td><td>5.901×107</td><td>1.87 y</td><td>β+</td><td></td></tr><tr><td>402</td><td><a href="/facts/Isotopes_of_tantalum/uPRoIMz1">179Ta</a></td><td>73</td><td>106</td><td>8.352703</td><td>5.743×107</td><td>1.82 y</td><td>β+</td><td></td></tr><tr><td>403</td><td><a href="/facts/Isotopes_of_lutetium/yUu2IeCp">173Lu</a></td><td>71</td><td>102</td><td>8.400147</td><td>4.323×107</td><td>1.37 y</td><td>β+</td><td></td></tr><tr><td>404</td><td><a href="/facts/Isotopes_of_einsteinium/Uecqdyr4">252Es</a></td><td>99</td><td>153</td><td>7.764621</td><td>4.075×107</td><td>1.291 y</td><td>α, β+, β−</td><td></td></tr><tr><td>405</td><td><a href="/facts/Isotopes_of_cadmium/2F42oNDz">109Cd</a></td><td>48</td><td>61</td><td>8.883327</td><td>3.986×107</td><td>1.263 y</td><td>β+</td><td></td></tr><tr><td>406</td><td><a href="/facts/Isotopes_of_neptunium/X3bPWwX1">235Np</a></td><td>93</td><td>142</td><td>7.896669</td><td>3.422×107</td><td>1.084 y</td><td>β+, α</td><td></td></tr><tr><td>407</td><td><a href="/facts/Isotopes_of_ruthenium/C9GGqqPM">106Ru</a></td><td>44</td><td>62</td><td>8.885686</td><td>3.228×107</td><td>1.023 y</td><td>β−</td><td>FP</td></tr><tr><td>408</td><td><a href="/facts/Isotopes_of_promethium/V6UzIbHz">144Pm</a></td><td>61</td><td>83</td><td>8.636751</td><td>3.136×107</td><td>363 d</td><td>β+</td><td></td></tr><tr><td>409</td><td><a href="/facts/Isotopes_of_samarium/e5wQw5B0">145Sm</a></td><td>62</td><td>83</td><td>8.627590</td><td>2.938×107</td><td>340 d</td><td>β+</td><td></td></tr><tr><td>410</td><td><a href="/facts/Isotopes_of_californium/tX06MlFX">248Cf</a></td><td>98</td><td>150</td><td>7.800198</td><td>2.881×107</td><td>333.4 d</td><td>α, SF</td><td></td></tr><tr><td>411</td><td><a href="/facts/Isotopes_of_berkelium/RnvnlKK4">249Bk</a></td><td>97</td><td>152</td><td>7.790805</td><td>2.851×107</td><td>330 d</td><td>β−, α, SF</td><td></td></tr><tr><td>412</td><td><a href="/facts/Isotopes_of_vanadium/R4BEw3I9">49V</a></td><td>23</td><td>26</td><td>9.050040</td><td>2.843×107</td><td>329.1 d</td><td>β+</td><td></td></tr><tr><td>413</td><td><a href="/facts/Isotopes_of_manganese/NUERgknG">54Mn</a></td><td>25</td><td>29</td><td>9.100131</td><td>2.697×107</td><td>312.2 d</td><td>β+, β−</td><td>IM</td></tr><tr><td>414</td><td><a href="/facts/Isotopes_of_tin/C3yupbqu">119m1Sn</a></td><td>50</td><td>69</td><td></td><td>2.534×107</td><td>293.1 d</td><td>IT</td><td></td></tr><tr><td>415</td><td><a href="/facts/Isotopes_of_cerium/n2LF751R">144Ce</a></td><td>58</td><td>86</td><td>8.629918</td><td>2.462×107</td><td>285 d</td><td>β−</td><td>FP</td></tr><tr><td>416</td><td><a href="/facts/Isotopes_of_einsteinium/Uecqdyr4">254Es</a></td><td>99</td><td>155</td><td>7.748524</td><td>2.382×107</td><td>275.7 d</td><td>α, β−, SF, β+</td><td></td></tr><tr><td>417</td><td><a href="/facts/Isotopes_of_cobalt/jIIqGRE3">57Co</a></td><td>27</td><td>30</td><td>9.112454</td><td>2.348×107</td><td>271.8 d</td><td>β+</td><td>IM</td></tr><tr><td>418</td><td><a href="/facts/Isotopes_of_germanium/kLqa6bcf">68Ge</a></td><td>32</td><td>36</td><td>9.056327</td><td>2.341×107</td><td>271 d</td><td>β+</td><td>IM</td></tr><tr><td>419</td><td><a href="/facts/Isotopes_of_promethium/V6UzIbHz">143Pm</a></td><td>61</td><td>82</td><td>8.651509</td><td>2.290×107</td><td>265 d</td><td>β+</td><td></td></tr><tr><td>420</td><td><a href="/facts/Isotopes_of_silver/f4jsguS6">110mAg</a></td><td>47</td><td>63</td><td>8.865355</td><td>2.158×107</td><td>249.8 d</td><td>β−, IT</td><td></td></tr><tr><td>421</td><td><a href="/facts/Isotopes_of_zinc/4QJEMCzx">65Zn</a></td><td>30</td><td>35</td><td>9.085352</td><td>2.105×107</td><td>243.6 d</td><td>β+</td><td>IM</td></tr><tr><td>422</td><td><a href="/facts/Isotopes_of_gadolinium/1Ty1o8c1">153Gd</a></td><td>64</td><td>89</td><td>8.547731</td><td>2.077×107</td><td>240.4 d</td><td>β+</td><td>IM</td></tr><tr><td>423</td><td><a href="/facts/Isotopes_of_rhodium/fYAb2dz8">102Rh</a></td><td>45</td><td>57</td><td></td><td>1.788×107</td><td>207 d</td><td>β+, β−</td><td></td></tr><tr><td>424</td><td><a href="/facts/Isotopes_of_gold/9a1b4sIe">195Au</a></td><td>79</td><td>116</td><td>8.238353</td><td>1.608×107</td><td>186.1 d</td><td>β+</td><td></td></tr><tr><td>425</td><td><a href="/facts/Isotopes_of_iridium/F1zVVPRq">194mIr</a></td><td>77</td><td>117</td><td>8.238025</td><td>1.477×107</td><td>170.9 d</td><td>β−</td><td></td></tr><tr><td>426</td><td><a href="/facts/Isotopes_of_rhenium/UmIoHfcT">184mRe</a></td><td>75</td><td>109</td><td>8.310670</td><td>1.460×107</td><td>169 d</td><td>IT, β+</td><td></td></tr><tr><td>427</td><td><a href="/facts/Isotopes_of_curium/WnMh6VLE">242Cm</a></td><td>96</td><td>146</td><td>7.844860</td><td>1.407×107</td><td>162.8 d</td><td>α, SF</td><td></td></tr><tr><td>428</td><td><a href="/facts/Isotopes_of_calcium/YhuBa6LI">45Ca</a></td><td>20</td><td>25</td><td>8.978261</td><td>1.405×107</td><td>162.6 d</td><td>β−</td><td></td></tr><tr><td>429</td><td><a href="/facts/Isotopes_of_lutetium/yUu2IeCp">177mLu</a></td><td>71</td><td>106</td><td>8.361829</td><td>1.386×107</td><td>160.4 d</td><td>β−, IT</td><td></td></tr><tr><td>430</td><td><a href="/facts/Isotopes_of_tellurium/cE0X04xU">121mTe</a></td><td>52</td><td>69</td><td>8.800749</td><td>1.331×107</td><td>154.1 d</td><td>IT, β+</td><td></td></tr><tr><td>431</td><td><a href="/facts/Isotopes_of_dysprosium/F62g1Ep8">159Dy</a></td><td>66</td><td>93</td><td>8.506378</td><td>1.248×107</td><td>144.4 d</td><td>β+</td><td></td></tr><tr><td>432</td><td><a href="/facts/Isotopes_of_lutetium/yUu2IeCp">174m1Lu</a></td><td>71</td><td>103</td><td></td><td>1.227×107</td><td>142 d</td><td>IT, EC</td><td></td></tr><tr><td>433</td><td><a href="/facts/Isotopes_of_polonium/bIdUTjCm">210Po</a></td><td>84</td><td>126</td><td>8.147295</td><td>1.196×107</td><td>138.4 d</td><td>α</td><td>DP</td></tr><tr><td>434</td><td><a href="/facts/Isotopes_of_cerium/n2LF751R">139Ce</a></td><td>58</td><td>81</td><td>8.696881</td><td>1.189×107</td><td>137.6 d</td><td>β+</td><td></td></tr><tr><td>435</td><td><a href="/facts/Isotopes_of_tin/C3yupbqu">123Sn</a></td><td>50</td><td>73</td><td>8.785311</td><td>1.116×107</td><td>129.2 d</td><td>β−</td><td></td></tr><tr><td>436</td><td><a href="/facts/Isotopes_of_thulium/eqq1cw1P">170Tm</a></td><td>69</td><td>101</td><td>8.423096</td><td>1.111×107</td><td>128.6 d</td><td>β−, β+</td><td></td></tr><tr><td>437</td><td><a href="/facts/Isotopes_of_gadolinium/1Ty1o8c1">151Gd</a></td><td>64</td><td>87</td><td>8.562685</td><td>1.071×107</td><td>124 d</td><td>β+, α</td><td></td></tr><tr><td>438</td><td><a href="/facts/Isotopes_of_tungsten/hsYx9Wbb">181W</a></td><td>74</td><td>107</td><td>8.337924</td><td>1.047×107</td><td>121.2 d</td><td>β+</td><td></td></tr><tr><td>439</td><td><a href="/facts/Isotopes_of_selenium/vHHSImg2">75Se</a></td><td>34</td><td>41</td><td>9.033581</td><td>1.035×107</td><td>119.8 d</td><td>β+</td><td>IM</td></tr><tr><td>440</td><td><a href="/facts/Isotopes_of_tellurium/cE0X04xU">123mTe</a></td><td>52</td><td>71</td><td></td><td>1.03×107</td><td>119.2 d</td><td>IT</td><td></td></tr><tr><td>441</td><td><a href="/facts/Isotopes_of_tin/C3yupbqu">113Sn</a></td><td>50</td><td>63</td><td>8.853035</td><td>9.944×106</td><td>115.1 d</td><td>β+</td><td></td></tr><tr><td>442</td><td><a href="/facts/Isotopes_of_tantalum/uPRoIMz1">182Ta</a></td><td>73</td><td>109</td><td>8.326456</td><td>9.887×106</td><td>114.4 d</td><td>β−</td><td></td></tr><tr><td>443</td><td><a href="/facts/Isotopes_of_tellurium/cE0X04xU">127mTe</a></td><td>52</td><td>75</td><td>8.765759</td><td>9.418×106</td><td>109 d</td><td>IT, β−</td><td></td></tr><tr><td>444</td><td><a href="/facts/Isotopes_of_yttrium/GS71S6HJ">88Y</a></td><td>39</td><td>49</td><td>9.029272</td><td>9.212×106</td><td>106.6 d</td><td>β+</td><td></td></tr><tr><td>445</td><td><a href="/facts/Isotopes_of_fermium/1YBM8Su0">257Fm</a></td><td>100</td><td>157</td><td>7.726619</td><td>8.683×106</td><td>100.5 d</td><td>α, SF</td><td></td></tr><tr><td>446</td><td><a href="/facts/Isotopes_of_osmium/7psC8ylM">185Os</a></td><td>76</td><td>109</td><td>8.302730</td><td>8.087×106</td><td>93.6 d</td><td>β+</td><td></td></tr><tr><td>447</td><td><a href="/facts/Isotopes_of_thulium/eqq1cw1P">168Tm</a></td><td>69</td><td>99</td><td>8.436316</td><td>8.044×106</td><td>93.1 d</td><td>β+, β−</td><td></td></tr><tr><td>448</td><td><a href="/facts/Isotopes_of_europium/IUWzfhMI">149Eu</a></td><td>63</td><td>86</td><td>8.584395</td><td>8.044×106</td><td>93.1 d</td><td>β+</td><td></td></tr><tr><td>449</td><td><a href="/facts/Isotopes_of_technetium/WrV3Wrrs">97mTc</a></td><td>43</td><td>54</td><td></td><td>7.862×106</td><td>91 d</td><td>IT, EC</td><td></td></tr><tr><td>450</td><td><a href="/facts/Isotopes_of_sulfur/08Qs8w3o">35S</a></td><td>16</td><td>19</td><td>8.895510</td><td>7.561×106</td><td>87.51 d</td><td>β−</td><td>CG</td></tr><tr><td>451</td><td><a href="/facts/Isotopes_of_rubidium/9jc8FbaB">83Rb</a></td><td>37</td><td>46</td><td>9.024038</td><td>7.448×106</td><td>86.2 d</td><td>β+</td><td></td></tr><tr><td>452</td><td><a href="/facts/Isotopes_of_scandium/avIUruhT">46Sc</a></td><td>21</td><td>25</td><td>8.979091</td><td>7.239×106</td><td>83.78 d</td><td>β−</td><td></td></tr><tr><td>453</td><td><a href="/facts/Isotopes_of_zirconium/NzDqkTRf">88Zr</a></td><td>40</td><td>48</td><td>9.021589</td><td>7.206×106</td><td>83.4 d</td><td>β+</td><td></td></tr><tr><td>454</td><td><a href="/facts/Isotopes_of_arsenic/VvoUD0pG">73As</a></td><td>33</td><td>40</td><td>9.043341</td><td>6.938×106</td><td>80.3 d</td><td>β+</td><td></td></tr><tr><td>455</td><td><a href="/facts/Isotopes_of_cobalt/jIIqGRE3">56Co</a></td><td>27</td><td>29</td><td>9.072031</td><td>6.673×106</td><td>77.23 d</td><td>β+</td><td></td></tr><tr><td>456</td><td><a href="/facts/Isotopes_of_tungsten/hsYx9Wbb">185W</a></td><td>74</td><td>111</td><td>8.305866</td><td>6.489×106</td><td>75.1 d</td><td>β−</td><td></td></tr><tr><td>457</td><td><a href="/facts/Isotopes_of_iridium/F1zVVPRq">192Ir</a></td><td>77</td><td>115</td><td></td><td>6.379×106</td><td>73.827 d</td><td>β−, EC</td><td>IM</td></tr><tr><td>458</td><td><a href="/facts/Isotopes_of_terbium/W0Wxkne3">160Tb</a></td><td>65</td><td>95</td><td>8.495346</td><td>6.247×106</td><td>72.3 d</td><td>β−</td><td></td></tr><tr><td>459</td><td><a href="/facts/Isotopes_of_cobalt/jIIqGRE3">58Co</a></td><td>27</td><td>31</td><td>9.103153</td><td>6.122×106</td><td>70.86 d</td><td>β+</td><td></td></tr><tr><td>460</td><td><a href="/facts/Isotopes_of_rhenium/UmIoHfcT">183Re</a></td><td>75</td><td>108</td><td>8.321661</td><td>6.048×106</td><td>70 d</td><td>β+</td><td></td></tr><tr><td>461</td><td><a href="/facts/Isotopes_of_hafnium/4sCv7aQ6">175Hf</a></td><td>72</td><td>103</td><td>8.382665</td><td>6.048×106</td><td>70 d</td><td>β+</td><td></td></tr><tr><td>462</td><td><a href="/facts/Isotopes_of_tungsten/hsYx9Wbb">188W</a></td><td>74</td><td>114</td><td>8.277003</td><td>6.029×106</td><td>69.78 d</td><td>β−</td><td></td></tr><tr><td>463</td><td><a href="/facts/Isotopes_of_strontium/ljDHPVaV">85Sr</a></td><td>38</td><td>47</td><td>9.025480</td><td>5.602×106</td><td>64.84 d</td><td>β+</td><td></td></tr><tr><td>464</td><td><a href="/facts/Isotopes_of_zirconium/NzDqkTRf">95Zr</a></td><td>40</td><td>55</td><td>8.972989</td><td>5.532×106</td><td>64.03 d</td><td>β−</td><td>FP</td></tr><tr><td>465</td><td><a href="/facts/Isotopes_of_technetium/WrV3Wrrs">95mTc</a></td><td>43</td><td>52</td><td>8.976359</td><td>5.270×106</td><td>61 d</td><td>β+, IT</td><td></td></tr><tr><td>466</td><td><a href="/facts/Isotopes_of_niobium/nbT6c0vs">91mNb</a></td><td>41</td><td>50</td><td></td><td>5.258×106</td><td>60.86 d</td><td>IT, EC</td><td></td></tr><tr><td>467</td><td><a href="/facts/Isotopes_of_californium/tX06MlFX">254Cf</a></td><td>98</td><td>156</td><td>7.751087</td><td>5.227×106</td><td>60.5 d</td><td>SF, α</td><td></td></tr><tr><td>468</td><td><a href="/facts/Isotopes_of_antimony/QMxb6D0V">124Sb</a></td><td>51</td><td>73</td><td>8.777943</td><td>5.194×106</td><td>60.12 d</td><td>β−</td><td></td></tr><tr><td>469</td><td><a href="/facts/Isotopes_of_iodine/HxgH1yJD">125I</a></td><td>53</td><td>72</td><td>8.782019</td><td>5.132×106</td><td>59.4 d</td><td>β+</td><td>IM</td></tr><tr><td>470</td><td><a href="/facts/Isotopes_of_yttrium/GS71S6HJ">91Y</a></td><td>39</td><td>52</td><td>9.020174</td><td>5.055×106</td><td>58.51 d</td><td>β−</td><td>FP</td></tr><tr><td>471</td><td><a href="/facts/Isotopes_of_tellurium/cE0X04xU">125mTe</a></td><td>52</td><td>73</td><td></td><td>4.959×106</td><td>57.4 d</td><td>IT</td><td></td></tr><tr><td>472</td><td><a href="/facts/Isotopes_of_europium/IUWzfhMI">148Eu</a></td><td>63</td><td>85</td><td>8.586882</td><td>4.709×106</td><td>54.5 d</td><td>β+, α</td><td></td></tr><tr><td>473</td><td><a href="/facts/Isotopes_of_beryllium/bNvHB5xg">7Be</a></td><td>4</td><td>3</td><td>5.818470</td><td>4.598×106</td><td>53.22 d</td><td>β+</td><td>CG</td></tr><tr><td>474</td><td><a href="/facts/Isotopes_of_mendelevium/D4aMzPqW">258Md</a></td><td>101</td><td>157</td><td>7.715948</td><td>4.450×106</td><td>51.5 d</td><td>α, SF</td><td></td></tr><tr><td>475</td><td><a href="/facts/Isotopes_of_strontium/ljDHPVaV">89Sr</a></td><td>38</td><td>51</td><td>9.039969</td><td>4.369×106</td><td>50.57 d</td><td>β−</td><td>FP, IM</td></tr><tr><td>476</td><td><a href="/facts/Isotopes_of_indium/4AVSfBza">114mIn</a></td><td>49</td><td>65</td><td>8.846608</td><td>4.278×106</td><td>49.51 d</td><td>IT, β+</td><td></td></tr><tr><td>477</td><td><a href="/facts/Isotopes_of_gadolinium/1Ty1o8c1">146Gd</a></td><td>64</td><td>82</td><td>8.592512</td><td>4.171×106</td><td>48.28 d</td><td>β+</td><td></td></tr><tr><td>478</td><td><a href="/facts/Isotopes_of_mercury/gVVXzNeh">203Hg</a></td><td>80</td><td>123</td><td>8.195806</td><td>4.026×106</td><td>46.6 d</td><td>β−</td><td></td></tr><tr><td>479</td><td><a href="/facts/Isotopes_of_plutonium/ASACBN4x">237Pu</a></td><td>94</td><td>143</td><td>7.881060</td><td>3.905×106</td><td>45.2 d</td><td>β+, α</td><td></td></tr><tr><td>480</td><td><a href="/facts/Isotopes_of_cadmium/2F42oNDz">115mCd</a></td><td>48</td><td>67</td><td>8.835754</td><td>3.850×106</td><td>44.56 d</td><td>β−</td><td></td></tr><tr><td>481</td><td><a href="/facts/Isotopes_of_iron/GVebbg1n">59Fe</a></td><td>26</td><td>33</td><td>9.099516</td><td>3.844×106</td><td>44.49 d</td><td>β−</td><td>IM</td></tr><tr><td>482</td><td><a href="/facts/Isotopes_of_hafnium/4sCv7aQ6">181Hf</a></td><td>72</td><td>109</td><td>8.333272</td><td>3.662×106</td><td>42.38 d</td><td>β−</td><td></td></tr><tr><td>483</td><td><a href="/facts/Isotopes_of_promethium/V6UzIbHz">148mPm</a></td><td>61</td><td>87</td><td>8.589800</td><td>3.567×106</td><td>41.28 d</td><td>β−, IT</td><td></td></tr><tr><td>484</td><td><a href="/facts/Isotopes_of_silver/f4jsguS6">105Ag</a></td><td>47</td><td>58</td><td>8.900547</td><td>3.567×106</td><td>41.28 d</td><td>β+</td><td></td></tr><tr><td>485</td><td><a href="/facts/Isotopes_of_einsteinium/Uecqdyr4">255Es</a></td><td>99</td><td>156</td><td>7.741567</td><td>3.439×106</td><td>39.8 d</td><td>β−, α, SF</td><td></td></tr><tr><td>486</td><td><a href="/facts/Isotopes_of_ruthenium/C9GGqqPM">103Ru</a></td><td>44</td><td>59</td><td>8.918500</td><td>3.392×106</td><td>39.26 d</td><td>β−</td><td>FP</td></tr><tr><td>487</td><td><a href="/facts/Isotopes_of_xenon/Yz78R52h">127Xe</a></td><td>54</td><td>73</td><td>8.766768</td><td>3.145×106</td><td>36.4 d</td><td>β+</td><td></td></tr><tr><td>488</td><td><a href="/facts/Isotopes_of_rhenium/UmIoHfcT">184Re</a></td><td>75</td><td>109</td><td></td><td>3.059×106</td><td>35.4 d</td><td>β+</td><td></td></tr><tr><td>489</td><td><a href="/facts/Isotopes_of_niobium/nbT6c0vs">95Nb</a></td><td>41</td><td>54</td><td>8.984821</td><td>3.023×106</td><td>34.99 d</td><td>β−</td><td>FP</td></tr><tr><td>490</td><td><a href="/facts/Isotopes_of_argon/BhxtyJGu">37Ar</a></td><td>18</td><td>19</td><td>8.907752</td><td>3.020×106</td><td>34.95 d</td><td>β+</td><td>CG</td></tr><tr><td>491</td><td><a href="/facts/Isotopes_of_tellurium/cE0X04xU">129mTe</a></td><td>52</td><td>77</td><td>8.744953</td><td>2.903×106</td><td>33.6 d</td><td>IT, β−</td><td></td></tr><tr><td>492</td><td><a href="/facts/Isotopes_of_rubidium/9jc8FbaB">84Rb</a></td><td>37</td><td>47</td><td>9.020732</td><td>2.860×106</td><td>33.1 d</td><td>β+, β−</td><td></td></tr><tr><td>493</td><td><a href="/facts/Isotopes_of_curium/WnMh6VLE">241Cm</a></td><td>96</td><td>145</td><td>7.848492</td><td>2.834×106</td><td>32.8 d</td><td>β+, α</td><td></td></tr><tr><td>494</td><td><a href="/facts/Isotopes_of_cerium/n2LF751R">141Ce</a></td><td>58</td><td>83</td><td>8.677286</td><td>2.809×106</td><td>32.51 d</td><td>β−</td><td>FP</td></tr><tr><td>495</td><td><a href="/facts/Isotopes_of_ytterbium/76nIxUvr">169Yb</a></td><td>70</td><td>99</td><td>8.428546</td><td>2.767×106</td><td>32.03 d</td><td>β+</td><td>IM</td></tr><tr><td>496</td><td><a href="/facts/Isotopes_of_mendelevium/D4aMzPqW">260Md</a></td><td>101</td><td>159</td><td>7.699789</td><td>2.748×106</td><td>31.81 d</td><td>SF, α, β+, β−</td><td></td></tr><tr><td>497</td><td><a href="/facts/Isotopes_of_chromium/vN4bakhn">51Cr</a></td><td>24</td><td>27</td><td>9.080127</td><td>2.393×106</td><td>27.7 d</td><td>β+</td><td>IM</td></tr><tr><td>498</td><td><a href="/facts/Isotopes_of_curium/WnMh6VLE">240Cm</a></td><td>96</td><td>144</td><td>7.855805</td><td>2.333×106</td><td>27 d</td><td>α, β+, SF</td><td></td></tr><tr><td>499</td><td><a href="/facts/Isotopes_of_protactinium/AVGw4A8U">233Pa</a></td><td>91</td><td>142</td><td>7.910426</td><td>2.331×106</td><td>26.98 d</td><td>β−</td><td>DP</td></tr><tr><td>500</td><td><a href="/facts/Isotopes_of_strontium/ljDHPVaV">82Sr</a></td><td>38</td><td>44</td><td>8.998254</td><td>2.208×106</td><td>25.56 d</td><td>β+</td><td>IM</td></tr><tr><td>501</td><td><a href="/facts/Isotopes_of_phosphorus/vE2sGdt2">33P</a></td><td>15</td><td>18</td><td>8.869434</td><td>2.189×106</td><td>25.34 d</td><td>β−</td><td></td></tr><tr><td>502</td><td><a href="/facts/Isotopes_of_hafnium/4sCv7aQ6">179m2Hf</a></td><td>72</td><td>107</td><td></td><td>2.164×106</td><td>25.05 d</td><td>IT</td><td></td></tr><tr><td>503</td><td><a href="/facts/Isotopes_of_thorium/lRb3opzg">234Th</a></td><td>90</td><td>144</td><td>7.897763</td><td>2.082×106</td><td>24.1 d</td><td>β−</td><td>DP</td></tr><tr><td>504</td><td><a href="/facts/Isotopes_of_europium/IUWzfhMI">147Eu</a></td><td>63</td><td>84</td><td>8.598879</td><td>2.082×106</td><td>24.1 d</td><td>β+, α</td><td></td></tr><tr><td>505</td><td><a href="/facts/Isotopes_of_tungsten/hsYx9Wbb">178W</a></td><td>74</td><td>104</td><td>8.354563</td><td>1.866×106</td><td>21.6 d</td><td>β+</td><td></td></tr><tr><td>506</td><td><a href="/facts/Isotopes_of_uranium/zWIQ6MVL">230U</a></td><td>92</td><td>138</td><td>7.933871</td><td>1.797×106</td><td>20.8 d</td><td>α, SF</td><td></td></tr><tr><td>507</td><td><a href="/facts/Isotopes_of_einsteinium/Uecqdyr4">253Es</a></td><td>99</td><td>154</td><td>7.759019</td><td>1.769×106</td><td>20.5 d</td><td>α, SF</td><td></td></tr><tr><td>508</td><td><a href="/facts/Isotopes_of_tellurium/cE0X04xU">121Te</a></td><td>52</td><td>69</td><td></td><td>1.656×106</td><td>19.2 d</td><td>ε</td><td></td></tr><tr><td>509</td><td><a href="/facts/Isotopes_of_thorium/lRb3opzg">227Th</a></td><td>90</td><td>137</td><td>7.957644</td><td>1.614×106</td><td>18.7 d</td><td>α</td><td>DP</td></tr><tr><td>510</td><td><a href="/facts/Isotopes_of_rubidium/9jc8FbaB">86Rb</a></td><td>37</td><td>49</td><td>9.033502</td><td>1.611×106</td><td>18.6 d</td><td>β−, β+</td><td></td></tr><tr><td>511</td><td><a href="/facts/Isotopes_of_californium/tX06MlFX">253Cf</a></td><td>98</td><td>155</td><td>7.757885</td><td>1.539×106</td><td>17.8 d</td><td>β−, α</td><td></td></tr><tr><td>512</td><td><a href="/facts/Isotopes_of_arsenic/VvoUD0pG">74As</a></td><td>33</td><td>41</td><td>9.028895</td><td>1.535×106</td><td>17.8 d</td><td>β+, β−</td><td></td></tr><tr><td>513</td><td><a href="/facts/Isotopes_of_protactinium/AVGw4A8U">230Pa</a></td><td>91</td><td>139</td><td>7.931436</td><td>1.503×106</td><td>17.4 d</td><td>β+, β−, α</td><td></td></tr><tr><td>514</td><td><a href="/facts/Isotopes_of_palladium/deN3NNeY">103Pd</a></td><td>46</td><td>57</td><td>8.920638</td><td>1.468×106</td><td>17.0 d</td><td>β+</td><td>IM</td></tr><tr><td>515</td><td><a href="/facts/Isotopes_of_rhodium/fYAb2dz8">99Rh</a></td><td>45</td><td>54</td><td>8.935711</td><td>1.391×106</td><td>16.1 d</td><td>β+</td><td></td></tr><tr><td>516</td><td><a href="/facts/Isotopes_of_vanadium/R4BEw3I9">48V</a></td><td>23</td><td>25</td><td>8.997890</td><td>1.380×106</td><td>15.97 d</td><td>β+</td><td></td></tr><tr><td>517</td><td><a href="/facts/Isotopes_of_osmium/7psC8ylM">191Os</a></td><td>76</td><td>115</td><td>8.261870</td><td>1.331×106</td><td>15.41 d</td><td>β−</td><td></td></tr><tr><td>518</td><td><a href="/facts/Isotopes_of_bismuth/DrbTkEzW">205Bi</a></td><td>83</td><td>122</td><td>8.174069</td><td>1.323×106</td><td>15.31 d</td><td>β+</td><td></td></tr><tr><td>519</td><td><a href="/facts/Isotopes_of_europium/IUWzfhMI">156Eu</a></td><td>63</td><td>93</td><td>8.520642</td><td>1.312×106</td><td>15.19 d</td><td>β−</td><td></td></tr><tr><td>520</td><td><a href="/facts/Isotopes_of_radium/T0SlGtRH">225Ra</a></td><td>88</td><td>137</td><td>7.973576</td><td>1.287×106</td><td>14.9 d</td><td>β−, α<a class="footnote-ref" id="fnref:105" href="#fn:105">105</a></td><td>DP</td></tr><tr><td>521</td><td><a href="/facts/Phosphorus-32/aEWwgebr">32P</a></td><td>15</td><td>17</td><td>8.830865</td><td>1.232×106</td><td>14.268 d</td><td>β−</td><td>CG, IM</td></tr><tr><td>522</td><td><a href="/facts/Isotopes_of_tin/C3yupbqu">117mSn</a></td><td>50</td><td>67</td><td></td><td>1.21×106</td><td>14 d</td><td>IT</td><td></td></tr><tr><td>523</td><td><a href="/facts/Isotopes_of_praseodymium/8J7u8hCJ">143Pr</a></td><td>59</td><td>84</td><td>8.652258</td><td>1.172×106</td><td>13.56 d</td><td>β−</td><td></td></tr><tr><td>524</td><td><a href="/facts/Isotopes_of_iridium/F1zVVPRq">189Ir</a></td><td>77</td><td>112</td><td>8.274783</td><td>1.140×106</td><td>13.19 d</td><td>β+</td><td></td></tr><tr><td>525</td><td><a href="/facts/Isotopes_of_caesium/m5AYV9tp">136Cs</a></td><td>55</td><td>81</td><td>8.706171</td><td>1.127×106</td><td>13.04 d</td><td>β−</td><td></td></tr><tr><td>526</td><td><a href="/facts/Isotopes_of_iodine/HxgH1yJD">126I</a></td><td>53</td><td>73</td><td>8.769026</td><td>1.117×106</td><td>12.93 d</td><td>β+, β−</td><td></td></tr><tr><td>527</td><td><a href="/facts/Isotopes_of_barium/qajGloJP">140Ba</a></td><td>56</td><td>84</td><td>8.666120</td><td>1.102×106</td><td>12.75 d</td><td>β−</td><td>FP</td></tr><tr><td>528</td><td><a href="/facts/Isotopes_of_antimony/QMxb6D0V">126Sb</a></td><td>51</td><td>75</td><td>8.757042</td><td>1.067×106</td><td>12.35 d</td><td>β−</td><td></td></tr><tr><td>529</td><td><a href="/facts/Isotopes_of_thallium/7BEwqp8j">202Tl</a></td><td>81</td><td>121</td><td>8.199956</td><td>1.057×106</td><td>12.23 d</td><td>β+</td><td></td></tr><tr><td>530</td><td><a href="/facts/Isotopes_of_xenon/Yz78R52h">131mXe</a></td><td>54</td><td>77</td><td></td><td>1.023×106</td><td>11.84 d</td><td>IT</td><td></td></tr><tr><td>531</td><td><a href="/facts/Isotopes_of_iridium/F1zVVPRq">190Ir</a></td><td>77</td><td>113</td><td>8.264755</td><td>1.018×106</td><td>11.78 d</td><td>β+</td><td></td></tr><tr><td>532</td><td><a href="/facts/Isotopes_of_barium/qajGloJP">131Ba</a></td><td>56</td><td>75</td><td>8.733037</td><td>9.936×105</td><td>11.5 d</td><td>β+</td><td></td></tr><tr><td>533</td><td><a href="/facts/Isotopes_of_radium/T0SlGtRH">223Ra</a></td><td>88</td><td>135</td><td>7.994042</td><td>9.876×105</td><td>11.43 d</td><td>α</td><td>DP, IM</td></tr><tr><td>534</td><td><a href="/facts/Isotopes_of_germanium/kLqa6bcf">71Ge</a></td><td>32</td><td>39</td><td>9.055943</td><td>9.876×105</td><td>11.43 d</td><td>β+</td><td></td></tr><tr><td>535</td><td><a href="/facts/Isotopes_of_neodymium/ojKx8hWx">147Nd</a></td><td>60</td><td>87</td><td>8.602973</td><td>9.487×105</td><td>10.98 d</td><td>β−</td><td></td></tr><tr><td>536</td><td><a href="/facts/Isotopes_of_plutonium/ASACBN4x">246Pu</a></td><td>94</td><td>152</td><td>7.805494</td><td>9.366×105</td><td>10.84 d</td><td>β−</td><td></td></tr><tr><td>537</td><td><a href="/facts/Isotopes_of_iridium/F1zVVPRq">193mIr</a></td><td>77</td><td>116</td><td></td><td>9.098×105</td><td>10.53 d</td><td>IT</td><td></td></tr><tr><td>538</td><td><a href="/facts/Isotopes_of_platinum/G5CS1TkP">188Pt</a></td><td>78</td><td>110</td><td>8.272514</td><td>8.813×105</td><td>10.2 d</td><td>β+, α</td><td></td></tr><tr><td>539</td><td><a href="/facts/Isotopes_of_niobium/nbT6c0vs">92mNb</a></td><td>41</td><td>51</td><td></td><td>8.770×105</td><td>10.15 d</td><td>β+, α</td><td></td></tr><tr><td>540</td><td><a href="/facts/Isotopes_of_actinium/vnv59EsB">225Ac</a></td><td>89</td><td>136</td><td>7.975159</td><td>8.571×105</td><td>9.92 d</td><td>α</td><td>DP</td></tr><tr><td>541</td><td><a href="/facts/Isotopes_of_caesium/m5AYV9tp">131Cs</a></td><td>55</td><td>76</td><td>8.743541</td><td>8.371×105</td><td>9.69 d</td><td>β+</td><td>IM</td></tr><tr><td>542</td><td><a href="/facts/Isotopes_of_tin/C3yupbqu">125Sn</a></td><td>50</td><td>75</td><td>8.758515</td><td>8.329×105</td><td>9.64 d</td><td>β−</td><td></td></tr><tr><td>543</td><td><a href="/facts/Isotopes_of_erbium/FH73BFxH">169Er</a></td><td>68</td><td>101</td><td>8.431852</td><td>8.115×105</td><td>9.39 d</td><td>β−</td><td>IM</td></tr><tr><td>544</td><td><a href="/facts/Isotopes_of_gadolinium/1Ty1o8c1">149Gd</a></td><td>64</td><td>85</td><td>8.575576</td><td>8.018×105</td><td>9.28 d</td><td>β+, α</td><td></td></tr><tr><td>545</td><td><a href="/facts/Isotopes_of_thulium/eqq1cw1P">167Tm</a></td><td>69</td><td>98</td><td>8.445866</td><td>7.992×105</td><td>9.25 d</td><td>β+</td><td></td></tr><tr><td>546</td><td><a href="/facts/Isotopes_of_xenon/Yz78R52h">129mXe</a></td><td>54</td><td>75</td><td></td><td>7.672×105</td><td>8.88 d</td><td>IT</td><td></td></tr><tr><td>547</td><td><a href="/facts/Isotopes_of_polonium/bIdUTjCm">206Po</a></td><td>84</td><td>122</td><td>8.159590</td><td>7.603×105</td><td>8.80 d</td><td>β+, α</td><td></td></tr><tr><td>548</td><td><a href="/facts/Isotopes_of_selenium/vHHSImg2">72Se</a></td><td>34</td><td>38</td><td>9.014300</td><td>7.258×105</td><td>8.40 d</td><td>β+</td><td></td></tr><tr><td>549</td><td><a href="/facts/Isotopes_of_silver/f4jsguS6">106mAg</a></td><td>47</td><td>59</td><td>8.890639</td><td>7.154×105</td><td>8.28 d</td><td>β+</td><td></td></tr><tr><td>550</td><td><a href="/facts/Isotopes_of_lutetium/yUu2IeCp">171Lu</a></td><td>71</td><td>100</td><td>8.409532</td><td>7.119×105</td><td>8.24 d</td><td>β+</td><td></td></tr><tr><td>551</td><td><a href="/facts/Iodine-131/cMvRbKfK">131I</a></td><td>53</td><td>78</td><td>8.738842</td><td>6.930×105</td><td>8.02 d</td><td>β−</td><td>FP, IM</td></tr><tr><td>552</td><td><a href="/facts/Isotopes_of_einsteinium/Uecqdyr4">257Es</a></td><td>99</td><td>158</td><td>7.723468</td><td>6.653×105</td><td>7.7 d</td><td>β−, SF</td><td></td></tr><tr><td>553</td><td><a href="/facts/Isotopes_of_silver/f4jsguS6">111Ag</a></td><td>47</td><td>64</td><td>8.866111</td><td>6.437×105</td><td>7.45 d</td><td>β−</td><td></td></tr><tr><td>554</td><td><a href="/facts/Isotopes_of_terbium/W0Wxkne3">161Tb</a></td><td>65</td><td>96</td><td>8.490383</td><td>5.967×105</td><td>6.91 d</td><td>β−</td><td></td></tr><tr><td>555</td><td><a href="/facts/Isotopes_of_uranium/zWIQ6MVL">237U</a></td><td>92</td><td>145</td><td>7.879800</td><td>5.832×105</td><td>6.75 d</td><td>β−</td><td>DP</td></tr><tr><td>556</td><td><a href="/facts/Isotopes_of_lutetium/yUu2IeCp">172Lu</a></td><td>71</td><td>101</td><td>8.401217</td><td>5.789×105</td><td>6.70 d</td><td>β+</td><td>IM</td></tr><tr><td>557</td><td><a href="/facts/Isotopes_of_lutetium/yUu2IeCp">177Lu</a></td><td>71</td><td>106</td><td></td><td>5.743×105</td><td>6.65 d</td><td>β−</td><td></td></tr><tr><td>558</td><td><a href="/facts/Isotopes_of_caesium/m5AYV9tp">132Cs</a></td><td>55</td><td>77</td><td>8.731599</td><td>5.599×105</td><td>6.48 d</td><td>β+, β−</td><td></td></tr><tr><td>559</td><td><a href="/facts/Isotopes_of_bismuth/DrbTkEzW">206Bi</a></td><td>83</td><td>123</td><td>8.168551</td><td>5.394×105</td><td>6.24 d</td><td>β+</td><td></td></tr><tr><td>560</td><td><a href="/facts/Isotopes_of_gold/9a1b4sIe">196Au</a></td><td>79</td><td>117</td><td>8.230205</td><td>5.328×105</td><td>5.17 d</td><td>β+, β−</td><td></td></tr><tr><td>561</td><td><a href="/facts/Isotopes_of_nickel/3jPqldnR">56Ni</a></td><td>28</td><td>28</td><td>9.033899</td><td>5.249×105</td><td>6.08 d</td><td>β+</td><td></td></tr><tr><td>562</td><td><a href="/facts/Isotopes_of_tellurium/cE0X04xU">118Te</a></td><td>52</td><td>66</td><td>8.814726</td><td>5.184×105</td><td>6 d</td><td>β+</td><td></td></tr><tr><td>563</td><td><a href="/facts/Isotopes_of_europium/IUWzfhMI">145Eu</a></td><td>63</td><td>82</td><td>8.609245</td><td>5.124×105</td><td>5.93 d</td><td>β+</td><td></td></tr><tr><td>564</td><td><a href="/facts/Isotopes_of_antimony/QMxb6D0V">120mSb</a></td><td>51</td><td>69</td><td>8.808194</td><td>4.977×105</td><td>5.76 d</td><td>β+</td><td></td></tr><tr><td>565</td><td><a href="/facts/Isotopes_of_manganese/NUERgknG">52Mn</a></td><td>25</td><td>27</td><td>9.046431</td><td>4.831×105</td><td>5.59 d</td><td>β+</td><td></td></tr><tr><td>566</td><td><a href="/facts/Isotopes_of_promethium/V6UzIbHz">148Pm</a></td><td>61</td><td>87</td><td></td><td>4.638×105</td><td>5.37 d</td><td>β−</td><td></td></tr><tr><td>567</td><td><a href="/facts/Isotopes_of_terbium/W0Wxkne3">156Tb</a></td><td>65</td><td>91</td><td>8.520667</td><td>4.622×105</td><td>5.35 d</td><td>β+</td><td></td></tr><tr><td>568</td><td><a href="/facts/Isotopes_of_terbium/W0Wxkne3">155Tb</a></td><td>65</td><td>90</td><td>8.531031</td><td>4.596×105</td><td>5.32 d</td><td>β+</td><td></td></tr><tr><td>569</td><td><a href="/facts/Isotopes_of_xenon/Yz78R52h">133Xe</a></td><td>54</td><td>79</td><td>8.730302</td><td>4.530×105</td><td>5.24 d</td><td>β−</td><td>IM</td></tr><tr><td>570</td><td><a href="/facts/Isotopes_of_tantalum/uPRoIMz1">183Ta</a></td><td>73</td><td>110</td><td>8.318847</td><td>4.406×105</td><td>5.10 d</td><td>β−</td><td></td></tr><tr><td>571</td><td><a href="/facts/Isotopes_of_bismuth/DrbTkEzW">210Bi</a></td><td>83</td><td>127</td><td></td><td>4.330×105</td><td>5.01 d</td><td>β−, α</td><td>DP</td></tr><tr><td>572</td><td><a href="/facts/Isotopes_of_berkelium/RnvnlKK4">245Bk</a></td><td>97</td><td>148</td><td>7.819020</td><td>4.268×105</td><td>4.94 d</td><td>β+, α</td><td></td></tr><tr><td>573</td><td><a href="/facts/Isotopes_of_tellurium/cE0X04xU">119mTe</a></td><td>52</td><td>67</td><td>8.801773</td><td>4.061×105</td><td>4.7 d</td><td>β+, IT</td><td></td></tr><tr><td>574</td><td><a href="/facts/Isotopes_of_europium/IUWzfhMI">146Eu</a></td><td>63</td><td>83</td><td>8.599560</td><td>3.983×105</td><td>4.61 d</td><td>β+</td><td></td></tr><tr><td>575</td><td><a href="/facts/Isotopes_of_calcium/YhuBa6LI">47Ca</a></td><td>20</td><td>27</td><td>8.972181</td><td>3.919×105</td><td>4.54 d</td><td>β−</td><td></td></tr><tr><td>576</td><td><a href="/facts/Isotopes_of_neptunium/X3bPWwX1">234Np</a></td><td>93</td><td>141</td><td>7.900571</td><td>3.802×105</td><td>4.4 d</td><td>β+</td><td></td></tr><tr><td>577</td><td><a href="/facts/Isotopes_of_rhodium/fYAb2dz8">101mRh</a></td><td>45</td><td>56</td><td></td><td>3.74×105</td><td>4.34 d</td><td>ε, IT</td><td></td></tr><tr><td>578</td><td><a href="/facts/Isotopes_of_platinum/G5CS1TkP">193mPt</a></td><td>78</td><td>115</td><td></td><td>3.74×105</td><td>4.33 d</td><td>IT</td><td></td></tr><tr><td>579</td><td><a href="/facts/Isotopes_of_technetium/WrV3Wrrs">96Tc</a></td><td>43</td><td>53</td><td>8.965255</td><td>3.698×105</td><td>4.28 d</td><td>β+</td><td></td></tr><tr><td>580</td><td><a href="/facts/Isotopes_of_uranium/zWIQ6MVL">231U</a></td><td>92</td><td>139</td><td>7.924977</td><td>3.629×105</td><td>4.2 d</td><td>β+, α</td><td></td></tr><tr><td>581</td><td><a href="/facts/Isotopes_of_ytterbium/76nIxUvr">175Yb</a></td><td>70</td><td>105</td><td>8.383902</td><td>3.616×105</td><td>4.19 d</td><td>β−</td><td></td></tr><tr><td>582</td><td><a href="/facts/Isotopes_of_iodine/HxgH1yJD">124I</a></td><td>53</td><td>71</td><td>8.775884</td><td>3.608×105</td><td>4.18 d</td><td>β+</td><td>IM</td></tr><tr><td>583</td><td><a href="/facts/Isotopes_of_platinum/G5CS1TkP">195mPt</a></td><td>78</td><td>117</td><td></td><td>3.46×105</td><td>4.01 d</td><td>IT</td><td></td></tr><tr><td>584</td><td><a href="/facts/Isotopes_of_antimony/QMxb6D0V">127Sb</a></td><td>51</td><td>76</td><td>8.754005</td><td>3.326×105</td><td>3.85 d</td><td>β−</td><td></td></tr><tr><td>585</td><td><a href="/facts/Isotopes_of_radon/QjlmESj0">222Rn</a></td><td>86</td><td>136</td><td>7.997573</td><td>3.304×105</td><td>3.82 d</td><td>α</td><td>DP</td></tr><tr><td>586</td><td><a href="/facts/Isotopes_of_rhenium/UmIoHfcT">186Re</a></td><td>75</td><td>111</td><td></td><td>3.21×105</td><td>3.72 d</td><td>β−,ε</td><td>IM</td></tr><tr><td>587</td><td><a href="/facts/Isotopes_of_radium/T0SlGtRH">224Ra</a></td><td>88</td><td>136</td><td>7.987277</td><td>3.138×105</td><td>3.63 d</td><td>α</td><td>DP</td></tr><tr><td>588</td><td><a href="/facts/Isotopes_of_palladium/deN3NNeY">100Pd</a></td><td>46</td><td>54</td><td>8.923587</td><td>3.136×105</td><td>3.63 d</td><td>β+</td><td></td></tr><tr><td>589</td><td><a href="/facts/Isotopes_of_niobium/nbT6c0vs">95mNb</a></td><td>41</td><td>54</td><td></td><td>3.11×105</td><td>3.61 d</td><td>IT, β−</td><td></td></tr><tr><td>590</td><td><a href="/facts/Isotopes_of_dysprosium/F62g1Ep8">166Dy</a></td><td>66</td><td>100</td><td>8.448376</td><td>2.938×105</td><td>3.4 d</td><td>β−</td><td></td></tr><tr><td>591</td><td><a href="/facts/Isotopes_of_neodymium/ojKx8hWx">140Nd</a></td><td>60</td><td>80</td><td>8.673113</td><td>2.912×105</td><td>3.37 d</td><td>β+</td><td></td></tr><tr><td>592</td><td><a href="/facts/Isotopes_of_scandium/avIUruhT">47Sc</a></td><td>21</td><td>26</td><td>9.014564</td><td>2.894×105</td><td>3.35 d</td><td>β−</td><td></td></tr><tr><td>593</td><td><a href="/facts/Isotopes_of_yttrium/GS71S6HJ">87Y</a></td><td>39</td><td>48</td><td>9.025565</td><td>2.873×105</td><td>3.33 d</td><td>β+</td><td></td></tr><tr><td>594</td><td><a href="/facts/Isotopes_of_zirconium/NzDqkTRf">89Zr</a></td><td>40</td><td>49</td><td>9.024912</td><td>2.823×105</td><td>3.27 d</td><td>β+</td><td></td></tr><tr><td>595</td><td><a href="/facts/Isotopes_of_gallium/Wk0C9DbY">67Ga</a></td><td>31</td><td>36</td><td>9.069532</td><td>2.819×105</td><td>3.26 d</td><td>β+</td><td>IM</td></tr><tr><td>596</td><td><a href="/facts/Isotopes_of_tellurium/cE0X04xU">132Te</a></td><td>52</td><td>80</td><td>8.716646</td><td>2.768×105</td><td>3.2 d</td><td>β−</td><td>FP</td></tr><tr><td>597</td><td><a href="/facts/Isotopes_of_cerium/n2LF751R">134Ce</a></td><td>58</td><td>76</td><td>8.704432</td><td>2.730×105</td><td>3.16 d</td><td>β+</td><td></td></tr><tr><td>598</td><td><a href="/facts/Isotopes_of_gold/9a1b4sIe">199Au</a></td><td>79</td><td>120</td><td>8.217534</td><td>2.712×105</td><td>3.14 d</td><td>β−</td><td></td></tr><tr><td>599</td><td><a href="/facts/Isotopes_of_thallium/7BEwqp8j">201Tl</a></td><td>81</td><td>120</td><td>8.206561</td><td>2.625×105</td><td>3.04 d</td><td>β+</td><td>IM</td></tr><tr><td>600</td><td><a href="/facts/Isotopes_of_fermium/1YBM8Su0">253Fm</a></td><td>100</td><td>153</td><td>7.757691</td><td>2.592×105</td><td>3. d</td><td>β+, α</td><td></td></tr><tr><td>601</td><td><a href="/facts/Isotopes_of_platinum/G5CS1TkP">191Pt</a></td><td>78</td><td>113</td><td>8.258228</td><td>2.473×105</td><td>2.86 d</td><td>β+</td><td></td></tr><tr><td>602</td><td><a href="/facts/Isotopes_of_indium/4AVSfBza">111In</a></td><td>49</td><td>62</td><td>8.867688</td><td>2.423×105</td><td>2.8 d</td><td>β+</td><td>IM</td></tr><tr><td>603</td><td><a href="/facts/Isotopes_of_ruthenium/C9GGqqPM">97Ru</a></td><td>44</td><td>53</td><td>8.959080</td><td>2.411×105</td><td>2.79 d</td><td>β+</td><td></td></tr><tr><td>604</td><td><a href="/facts/Isotopes_of_molybdenum/gpYnY3bx">99Mo</a></td><td>42</td><td>57</td><td>8.939669</td><td>2.375×105</td><td>2.75 d</td><td>β−</td><td>FP, IM</td></tr><tr><td>605</td><td><a href="/facts/Isotopes_of_antimony/QMxb6D0V">122Sb</a></td><td>51</td><td>71</td><td>8.795346</td><td>2.353×105</td><td>2.72 d</td><td>β−, β+</td><td></td></tr><tr><td>606</td><td><a href="/facts/Isotopes_of_arsenic/VvoUD0pG">71As</a></td><td>33</td><td>38</td><td>9.027581</td><td>2.350×105</td><td>2.72 d</td><td>β+</td><td></td></tr><tr><td>607</td><td><a href="/facts/Isotopes_of_gold/9a1b4sIe">198Au</a></td><td>79</td><td>119</td><td>8.220732</td><td>2.329×105</td><td>2.7 d</td><td>β−</td><td>IM</td></tr><tr><td>608</td><td><a href="/facts/Isotopes_of_mercury/gVVXzNeh">197Hg</a></td><td>80</td><td>117</td><td>8.226358</td><td>2.309×105</td><td>2.67 d</td><td>β+</td><td></td></tr><tr><td>609</td><td><a href="/facts/Isotopes_of_yttrium/GS71S6HJ">90Y</a></td><td>39</td><td>51</td><td>9.032294</td><td>2.306×105</td><td>2.67 d</td><td>β−</td><td>IM</td></tr><tr><td>610</td><td><a href="/facts/Isotopes_of_rhenium/UmIoHfcT">182Re</a></td><td>75</td><td>107</td><td>8.321053</td><td>2.304×105</td><td>2.67 d</td><td>β+</td><td></td></tr><tr><td>611</td><td><a href="/facts/Isotopes_of_thulium/eqq1cw1P">172Tm</a></td><td>69</td><td>103</td><td>8.404932</td><td>2.290×105</td><td>2.65 d</td><td>β−</td><td></td></tr><tr><td>612</td><td><a href="/facts/Isotopes_of_copper/1YpAhChe">67Cu</a></td><td>29</td><td>38</td><td>9.076086</td><td>2.226×105</td><td>2.58 d</td><td>β−</td><td>IM</td></tr><tr><td>613</td><td><a href="/facts/Isotopes_of_scandium/avIUruhT">44mSc</a></td><td>21</td><td>23</td><td>8.924627</td><td>2.110×105</td><td>2.44 d</td><td>IT, β+</td><td></td></tr><tr><td>614</td><td><a href="/facts/Isotopes_of_barium/qajGloJP">128Ba</a></td><td>56</td><td>72</td><td>8.738523</td><td>2.100×105</td><td>2.43 d</td><td>β+</td><td></td></tr><tr><td>615</td><td><a href="/facts/Isotopes_of_bromine/F7e69E1j">77Br</a></td><td>35</td><td>42</td><td>9.022431</td><td>2.053×105</td><td>2.38 d</td><td>β+</td><td></td></tr><tr><td>616</td><td><a href="/facts/Isotopes_of_ytterbium/76nIxUvr">166Yb</a></td><td>70</td><td>96</td><td>8.442340</td><td>2.041×105</td><td>2.36 d</td><td>β+</td><td></td></tr><tr><td>617</td><td><a href="/facts/Isotopes_of_tantalum/uPRoIMz1">177Ta</a></td><td>73</td><td>104</td><td>8.363553</td><td>2.036×105</td><td>2.36 d</td><td>β+</td><td></td></tr><tr><td>618</td><td><a href="/facts/Isotopes_of_neptunium/X3bPWwX1">239Np</a></td><td>93</td><td>146</td><td>7.864999</td><td>2.036×105</td><td>2.36 d</td><td>β−</td><td>DP</td></tr><tr><td>619</td><td><a href="/facts/Isotopes_of_terbium/W0Wxkne3">153Tb</a></td><td>65</td><td>88</td><td>8.537471</td><td>2.022×105</td><td>2.34 d</td><td>β+</td><td></td></tr><tr><td>620</td><td><a href="/facts/Isotopes_of_nickel/3jPqldnR">66Ni</a></td><td>28</td><td>38</td><td>9.071423</td><td>1.966×105</td><td>2.28 d</td><td>β−</td><td></td></tr><tr><td>621</td><td><a href="/facts/Isotopes_of_plutonium/ASACBN4x">247Pu</a></td><td>94</td><td>153</td><td>7.791975</td><td>1.961×105</td><td>2.27 d</td><td>β−</td><td></td></tr><tr><td>622</td><td><a href="/facts/Isotopes_of_gold/9a1b4sIe">198m2Au</a></td><td>79</td><td>119</td><td></td><td>1.96×105</td><td>2.27 d</td><td>IT</td><td></td></tr><tr><td>623</td><td><a href="/facts/Isotopes_of_cadmium/2F42oNDz">115Cd</a></td><td>48</td><td>67</td><td></td><td>1.92×105</td><td>2.23 d</td><td>β−</td><td></td></tr><tr><td>624</td><td><a href="/facts/Isotopes_of_promethium/V6UzIbHz">149Pm</a></td><td>61</td><td>88</td><td>8.581871</td><td>1.911×105</td><td>2.21 d</td><td>β−</td><td></td></tr><tr><td>625</td><td><a href="/facts/Isotopes_of_xenon/Yz78R52h">133mXe</a></td><td>54</td><td>79</td><td></td><td>1.89×105</td><td>2.20 d</td><td>IT</td><td></td></tr><tr><td>626</td><td><a href="/facts/Isotopes_of_lead/V9JFUTRo">203Pb</a></td><td>82</td><td>121</td><td>8.193431</td><td>1.869×105</td><td>2.16 d</td><td>β+</td><td></td></tr><tr><td>627</td><td><a href="/facts/Isotopes_of_neptunium/X3bPWwX1">238Np</a></td><td>93</td><td>145</td><td>7.871931</td><td>1.829×105</td><td>2.12 d</td><td>β−</td><td></td></tr><tr><td>628</td><td><a href="/facts/Isotopes_of_americium/aqoWt39B">240Am</a></td><td>95</td><td>145</td><td>7.856694</td><td>1.829×105</td><td>2.12 d</td><td>β+, α</td><td></td></tr><tr><td>629</td><td><a href="/facts/Isotopes_of_erbium/FH73BFxH">172Er</a></td><td>68</td><td>104</td><td>8.399752</td><td>1.775×105</td><td>2.05 d</td><td>β−</td><td></td></tr><tr><td>630</td><td><a href="/facts/Isotopes_of_lutetium/yUu2IeCp">170Lu</a></td><td>71</td><td>99</td><td>8.408445</td><td>1.738×105</td><td>2.01 d</td><td>β+</td><td></td></tr><tr><td>631</td><td><a href="/facts/Isotopes_of_zinc/4QJEMCzx">72Zn</a></td><td>30</td><td>42</td><td>9.017591</td><td>1.674×105</td><td>1.94 d</td><td>β−</td><td></td></tr><tr><td>632</td><td><a href="/facts/Isotopes_of_samarium/e5wQw5B0">153Sm</a></td><td>62</td><td>91</td><td>8.545614</td><td>1.666×105</td><td>1.93 d</td><td>β−</td><td>IM</td></tr><tr><td>633</td><td><a href="/facts/Isotopes_of_platinum/G5CS1TkP">202Pt</a></td><td>78</td><td>124</td><td>8.183209</td><td>1.584×105</td><td>1.83 d</td><td>β−</td><td></td></tr><tr><td>634</td><td><a href="/facts/Isotopes_of_scandium/avIUruhT">48Sc</a></td><td>21</td><td>27</td><td>8.998327</td><td>1.572×105</td><td>1.82 d</td><td>β−</td><td></td></tr><tr><td>635</td><td><a href="/facts/Isotopes_of_berkelium/RnvnlKK4">246Bk</a></td><td>97</td><td>149</td><td>7.811287</td><td>1.555×105</td><td>1.8 d</td><td>β+, α</td><td></td></tr><tr><td>636</td><td><a href="/facts/Isotopes_of_mercury/gVVXzNeh">195mHg</a></td><td>80</td><td>115</td><td>8.229399</td><td>1.498×105</td><td>1.73 d</td><td>IT, β+</td><td></td></tr><tr><td>637</td><td><a href="/facts/Isotopes_of_iridium/F1zVVPRq">188Ir</a></td><td>77</td><td>111</td><td>8.275200</td><td>1.494×105</td><td>1.73 d</td><td>β+</td><td></td></tr><tr><td>638</td><td><a href="/facts/Isotopes_of_lanthanum/dT37muIv">140La</a></td><td>57</td><td>83</td><td>8.673620</td><td>1.450×105</td><td>1.68 d</td><td>β−</td><td></td></tr><tr><td>639</td><td><a href="/facts/Isotopes_of_einsteinium/Uecqdyr4">254mEs</a></td><td>99</td><td>155</td><td></td><td>1.41×105</td><td>1.64 d</td><td>β−, IT, α, EC, SF</td><td></td></tr><tr><td>640</td><td><a href="/facts/Isotopes_of_germanium/kLqa6bcf">69Ge</a></td><td>32</td><td>37</td><td>9.043800</td><td>1.406×105</td><td>1.63 d</td><td>β+</td><td></td></tr><tr><td>641</td><td><a href="/facts/Isotopes_of_barium/qajGloJP">133mBa</a></td><td>56</td><td>77</td><td></td><td>1.4×105</td><td>1.62 d</td><td>IT,e</td><td></td></tr><tr><td>642</td><td><a href="/facts/Isotopes_of_arsenic/VvoUD0pG">77As</a></td><td>33</td><td>44</td><td>9.031283</td><td>1.398×105</td><td>1.62 d</td><td>β−</td><td></td></tr><tr><td>643</td><td><a href="/facts/Isotopes_of_antimony/QMxb6D0V">119Sb</a></td><td>51</td><td>68</td><td>8.823235</td><td>1.375×105</td><td>1.59 d</td><td>β+</td><td></td></tr><tr><td>644</td><td><a href="/facts/Isotopes_of_gadolinium/1Ty1o8c1">147Gd</a></td><td>64</td><td>83</td><td>8.584001</td><td>1.370×105</td><td>1.59 d</td><td>β+</td><td></td></tr><tr><td>645</td><td><a href="/facts/Isotopes_of_gold/9a1b4sIe">194Au</a></td><td>79</td><td>115</td><td>8.237626</td><td>1.369×105</td><td>1.58 d</td><td>β+</td><td></td></tr><tr><td>646</td><td><a href="/facts/Isotopes_of_protactinium/AVGw4A8U">229Pa</a></td><td>91</td><td>138</td><td>7.940769</td><td>1.296×105</td><td>1.5 d</td><td>β+, α</td><td></td></tr><tr><td>647</td><td><a href="/facts/Isotopes_of_californium/tX06MlFX">246Cf</a></td><td>98</td><td>148</td><td>7.810792</td><td>1.285×105</td><td>1.49 d</td><td>α, β+, SF</td><td></td></tr><tr><td>648</td><td><a href="/facts/Isotopes_of_nickel/3jPqldnR">57Ni</a></td><td>28</td><td>29</td><td>9.055222</td><td>1.282×105</td><td>1.48 d</td><td>β+</td><td></td></tr><tr><td>649</td><td><a href="/facts/Isotopes_of_rhodium/fYAb2dz8">105Rh</a></td><td>45</td><td>60</td><td>8.907956</td><td>1.273×105</td><td>1.47 d</td><td>β−</td><td>FP</td></tr><tr><td>650</td><td><a href="/facts/Isotopes_of_bromine/F7e69E1j">82Br</a></td><td>35</td><td>47</td><td>9.016407</td><td>1.270×105</td><td>1.47 d</td><td>β−</td><td></td></tr><tr><td>651</td><td><a href="/facts/Isotopes_of_krypton/8hRKYepJ">79Kr</a></td><td>36</td><td>43</td><td>9.013644</td><td>1.261×105</td><td>1.46 d</td><td>β+</td><td></td></tr><tr><td>652</td><td><a href="/facts/Isotopes_of_cerium/n2LF751R">137mCe</a></td><td>58</td><td>79</td><td>8.696327</td><td>1.238×105</td><td>1.43 d</td><td>IT, β+</td><td></td></tr><tr><td>653</td><td><a href="/facts/Isotopes_of_lutetium/yUu2IeCp">169Lu</a></td><td>71</td><td>98</td><td>8.414978</td><td>1.226×105</td><td>1.42 d</td><td>β+</td><td></td></tr><tr><td>654</td><td><a href="/facts/Isotopes_of_cerium/n2LF751R">143Ce</a></td><td>58</td><td>85</td><td>8.642041</td><td>1.189×105</td><td>1.38 d</td><td>β−</td><td></td></tr><tr><td>655</td><td><a href="/facts/Isotopes_of_einsteinium/Uecqdyr4">251Es</a></td><td>99</td><td>152</td><td>7.774467</td><td>1.188×105</td><td>1.38 d</td><td>β+, α</td><td></td></tr><tr><td>656</td><td><a href="/facts/Isotopes_of_strontium/ljDHPVaV">83Sr</a></td><td>38</td><td>45</td><td>8.996568</td><td>1.167×105</td><td>1.35 d</td><td>β+</td><td></td></tr><tr><td>657</td><td><a href="/facts/Isotopes_of_caesium/m5AYV9tp">129Cs</a></td><td>55</td><td>74</td><td>8.749622</td><td>1.154×105</td><td>1.34 d</td><td>β+</td><td></td></tr><tr><td>659</td><td><a href="/facts/Isotopes_of_protactinium/AVGw4A8U">232Pa</a></td><td>91</td><td>141</td><td>7.916379</td><td>1.132×105</td><td>1.31 d</td><td>β−, β+</td><td></td></tr><tr><td>660</td><td><a href="/facts/Isotopes_of_osmium/7psC8ylM">193Os</a></td><td>76</td><td>117</td><td>8.244348</td><td>1.084×105</td><td>1.25 d</td><td>β−</td><td></td></tr><tr><td>661</td><td><a href="/facts/Isotopes_of_thulium/eqq1cw1P">165Tm</a></td><td>69</td><td>96</td><td>8.452758</td><td>1.082×105</td><td>1.25 d</td><td>β+</td><td></td></tr><tr><td>662</td><td><a href="/facts/Isotopes_of_tellurium/cE0X04xU">131mTe</a></td><td>52</td><td>79</td><td>8.720392</td><td>1.080×105</td><td>1.25 d</td><td>β−, IT</td><td></td></tr><tr><td>663</td><td><a href="/facts/Isotopes_of_actinium/vnv59EsB">226Ac</a></td><td>89</td><td>137</td><td>7.963761</td><td>1.057×105</td><td>1.22 d</td><td>β−, β+, α</td><td></td></tr><tr><td>664</td><td><a href="/facts/Isotopes_of_erbium/FH73BFxH">160Er</a></td><td>68</td><td>92</td><td>8.484190</td><td>1.029×105</td><td>1.19 d</td><td>β+</td><td></td></tr><tr><td>665</td><td><a href="/facts/Isotopes_of_promethium/V6UzIbHz">151Pm</a></td><td>61</td><td>90</td><td>8.557387</td><td>1.022×105</td><td>1.18 d</td><td>β−</td><td></td></tr><tr><td>666</td><td><a href="/facts/Isotopes_of_barium/qajGloJP">135mBa</a></td><td>56</td><td>79</td><td></td><td>1.01×105</td><td>1.17 d</td><td>IT</td><td></td></tr><tr><td>667</td><td><a href="/facts/Isotopes_of_tin/C3yupbqu">121Sn</a></td><td>50</td><td>71</td><td></td><td>9.73×104</td><td>1.13 d</td><td>β−</td><td></td></tr><tr><td>668</td><td><a href="/facts/Isotopes_of_holmium/zNJ7HJqT">166Ho</a></td><td>67</td><td>99</td><td></td><td>9.65×104</td><td>1.12 d</td><td>β−</td><td>IM</td></tr><tr><td>669</td><td><a href="/facts/Isotopes_of_arsenic/VvoUD0pG">76As</a></td><td>33</td><td>43</td><td>9.022505</td><td>9.454×104</td><td>1.09 d</td><td>β−</td><td></td></tr><tr><td>670</td><td><a href="/facts/Isotopes_of_thallium/7BEwqp8j">200Tl</a></td><td>81</td><td>119</td><td>8.206567</td><td>9.396×104</td><td>1.09 d</td><td>β+</td><td></td></tr><tr><td>671</td><td><a href="/facts/Isotopes_of_arsenic/VvoUD0pG">72As</a></td><td>33</td><td>39</td><td>9.018966</td><td>9.360×104</td><td>1.08 d</td><td>β+</td><td></td></tr><tr><td>672</td><td><a href="/facts/Isotopes_of_thorium/lRb3opzg">231Th</a></td><td>90</td><td>141</td><td>7.924932</td><td>9.187×104</td><td>1.06 d</td><td>β−, α</td><td>DP</td></tr><tr><td>673</td><td><a href="/facts/Isotopes_of_fermium/1YBM8Su0">252Fm</a></td><td>100</td><td>152</td><td>7.766498</td><td>9.140×104</td><td>1.06 d</td><td>α, SF</td><td></td></tr><tr><td>674</td><td><a href="/facts/Isotopes_of_terbium/W0Wxkne3">156mTb</a></td><td>65</td><td>91</td><td></td><td>8.78×104</td><td>1.02 d</td><td>IT</td><td></td></tr><tr><td>675</td><td><a href="/facts/Isotopes_of_rhenium/UmIoHfcT">189Re</a></td><td>75</td><td>114</td><td>8.272269</td><td>8.748×104</td><td>1.01 d</td><td>β−</td><td></td></tr></tbody></table>
<h3>Radionuclides with half-lives of 1 hour to 1 day</h3>
Ordered by half-life.

<table><tbody><tr><th>No.</th><th>Nuclide</th><th>Z</th><th>N</th><th>Energy</th><th>Half-life(seconds)</th><th>Half-life(hours)</th><th>Decay mode</th><th>Notes</th></tr><tr><td>676</td><td><a href="/facts/Isotopes_of_mercury/gVVXzNeh">197mHg</a></td><td>80</td><td>117</td><td></td><td>8.568×104</td><td>23.8</td><td>IT</td><td></td></tr><tr><td>677</td><td><a href="/facts/Isotopes_of_tungsten/hsYx9Wbb">187W</a></td><td>74</td><td>113</td><td>8.284722</td><td>8.539×104</td><td>23.7</td><td>β−</td><td></td></tr><tr><td>678</td><td><a href="/facts/Isotopes_of_berkelium/RnvnlKK4">248mBk</a></td><td>97</td><td>151</td><td></td><td>8.532×104</td><td>23.7</td><td>β−, EC (30)</td><td></td></tr><tr><td>679</td><td><a href="/facts/Isotopes_of_hafnium/4sCv7aQ6">173Hf</a></td><td>72</td><td>101</td><td>8.391617</td><td>8.496×104</td><td>23.6</td><td>β+</td><td></td></tr><tr><td>680</td><td><a href="/facts/Isotopes_of_niobium/nbT6c0vs">96Nb</a></td><td>41</td><td>55</td><td>8.963036</td><td>8.406×104</td><td>23.4</td><td>β−</td><td></td></tr><tr><td>681</td><td><a href="/facts/Isotopes_of_terbium/W0Wxkne3">154m2Tb</a></td><td>65</td><td>89</td><td>8.526912</td><td>8.172×104</td><td>22.7</td><td>β+, IT (1.8)</td><td></td></tr><tr><td>682</td><td><a href="/facts/Isotopes_of_neptunium/X3bPWwX1">236mNp</a></td><td>93</td><td>143</td><td></td><td>8.1×104</td><td>22.5</td><td>EC, β− (50)</td><td></td></tr><tr><td>683</td><td><a href="/facts/Isotopes_of_potassium/xxMtp7JP">43K</a></td><td>19</td><td>24</td><td>8.922327</td><td>8.028×104</td><td>22.3</td><td>β−</td><td></td></tr><tr><td>684</td><td><a href="/facts/Isotopes_of_osmium/7psC8ylM">182Os</a></td><td>76</td><td>106</td><td>8.316432</td><td>7.956×104</td><td>22.1</td><td>β+</td><td></td></tr><tr><td>685</td><td><a href="/facts/Isotopes_of_protactinium/AVGw4A8U">228Pa</a></td><td>91</td><td>137</td><td>7.944468</td><td>7.920×104</td><td>22.0</td><td>β+, α (2)</td><td></td></tr><tr><td>686</td><td><a href="/facts/Isotopes_of_chromium/vN4bakhn">48Cr</a></td><td>24</td><td>24</td><td>8.963390</td><td>7.762×104</td><td>21.6</td><td>β+</td><td></td></tr><tr><td>687</td><td><a href="/facts/Isotopes_of_terbium/W0Wxkne3">154Tb</a></td><td>65</td><td>89</td><td></td><td>7.74×104</td><td>21.5</td><td>β+, β− (<0.1)</td><td></td></tr><tr><td>688</td><td><a href="/facts/Isotopes_of_lead/V9JFUTRo">200Pb</a></td><td>82</td><td>118</td><td>8.202542</td><td>7.740×104</td><td>21.5</td><td>β+</td><td></td></tr><tr><td>689</td><td><a href="/facts/Isotopes_of_palladium/deN3NNeY">112Pd</a></td><td>46</td><td>66</td><td>8.842185</td><td>7.571×104</td><td>21.0</td><td>β−</td><td></td></tr><tr><td>690</td><td><a href="/facts/Isotopes_of_magnesium/pv5hSrhW">28Mg</a></td><td>12</td><td>16</td><td>8.607706</td><td>7.529×104</td><td>20.9</td><td>β−</td><td>CG</td></tr><tr><td>691</td><td><a href="/facts/Isotopes_of_rhodium/fYAb2dz8">100Rh</a></td><td>45</td><td>55</td><td>8.927167</td><td>7.488×104</td><td>20.8</td><td>β+</td><td></td></tr><tr><td>692</td><td><a href="/facts/Isotopes_of_iodine/HxgH1yJD">133I</a></td><td>53</td><td>80</td><td>8.717094</td><td>7.488×104</td><td>20.8</td><td>β−</td><td></td></tr><tr><td>693</td><td><a href="/facts/Isotopes_of_xenon/Yz78R52h">122Xe</a></td><td>54</td><td>68</td><td>8.770959</td><td>7.236×104</td><td>20.1</td><td>β+</td><td></td></tr><tr><td>694</td><td><a href="/facts/Isotopes_of_fermium/1YBM8Su0">255Fm</a></td><td>100</td><td>155</td><td>7.742704</td><td>7.225×104</td><td>20.1</td><td>α, SF (tr)</td><td></td></tr><tr><td>695</td><td><a href="/facts/Isotopes_of_technetium/WrV3Wrrs">95Tc</a></td><td>43</td><td>52</td><td></td><td>7.2×104</td><td>20.0</td><td>β+</td><td></td></tr><tr><td>696</td><td><a href="/facts/Isotopes_of_rhenium/UmIoHfcT">181Re</a></td><td>75</td><td>106</td><td>8.328294</td><td>7.164×104</td><td>19.9</td><td>β+</td><td></td></tr><tr><td>697</td><td><a href="/facts/Isotopes_of_platinum/G5CS1TkP">197Pt</a></td><td>78</td><td>119</td><td>8.225756</td><td>7.161×104</td><td>19.9</td><td>β−</td><td></td></tr><tr><td>698</td><td><a href="/facts/Isotopes_of_lanthanum/dT37muIv">135La</a></td><td>57</td><td>78</td><td>8.713179</td><td>7.020×104</td><td>19.5</td><td>β+</td><td></td></tr><tr><td>699</td><td><a href="/facts/Isotopes_of_iridium/F1zVVPRq">194Ir</a></td><td>77</td><td>117</td><td></td><td>6.941×104</td><td>19.3</td><td>β−</td><td></td></tr><tr><td>700</td><td><a href="/facts/Isotopes_of_praseodymium/8J7u8hCJ">142Pr</a></td><td>59</td><td>83</td><td>8.661417</td><td>6.883×104</td><td>19.1</td><td>β−,EC (tr)</td><td></td></tr><tr><td>701</td><td><a href="/facts/Isotopes_of_gold/9a1b4sIe">200mAu</a></td><td>79</td><td>121</td><td>8.202877</td><td>6.732×104</td><td>18.7</td><td>β−, IT (18)</td><td></td></tr><tr><td>702</td><td><a href="/facts/Isotopes_of_gadolinium/1Ty1o8c1">159Gd</a></td><td>64</td><td>95</td><td>8.502576</td><td>6.652×104</td><td>18.5</td><td>β−</td><td></td></tr><tr><td>703</td><td><a href="/facts/Isotopes_of_cerium/n2LF751R">135Ce</a></td><td>58</td><td>77</td><td>8.698179</td><td>6.372×104</td><td>17.7</td><td>β+</td><td></td></tr><tr><td>704</td><td><a href="/facts/Isotopes_of_gold/9a1b4sIe">193Au</a></td><td>79</td><td>114</td><td>8.244353</td><td>6.354×104</td><td>17.7</td><td>β+</td><td></td></tr><tr><td>705</td><td><a href="/facts/Isotopes_of_terbium/W0Wxkne3">151Tb</a></td><td>65</td><td>86</td><td>8.545692</td><td>6.339×104</td><td>17.6</td><td>β+, α (tr)</td><td></td></tr><tr><td>706</td><td><a href="/facts/Isotopes_of_cobalt/jIIqGRE3">55Co</a></td><td>27</td><td>28</td><td>9.053647</td><td>6.311×104</td><td>17.5</td><td>β+</td><td></td></tr><tr><td>707</td><td><a href="/facts/Isotopes_of_terbium/W0Wxkne3">152Tb</a></td><td>65</td><td>87</td><td>8.536591</td><td>6.300×104</td><td>17.5</td><td>β+, α (tr)</td><td></td></tr><tr><td>708</td><td><a href="/facts/Isotopes_of_rhenium/UmIoHfcT">188Re</a></td><td>75</td><td>113</td><td>8.278860</td><td>6.121×104</td><td>17.0</td><td>β−</td><td>IM</td></tr><tr><td>709</td><td><a href="/facts/Isotopes_of_xenon/Yz78R52h">125Xe</a></td><td>54</td><td>71</td><td>8.768864</td><td>6.084×104</td><td>16.9</td><td>β+</td><td></td></tr><tr><td>710</td><td><a href="/facts/Isotopes_of_zirconium/NzDqkTRf">97Zr</a></td><td>40</td><td>57</td><td>8.926451</td><td>6.028×104</td><td>16.7</td><td>β−</td><td></td></tr><tr><td>711</td><td><a href="/facts/Isotopes_of_iridium/F1zVVPRq">186Ir</a></td><td>77</td><td>109</td><td>8.281935</td><td>5.990×104</td><td>16.6</td><td>β+</td><td></td></tr><tr><td>712</td><td><a href="/facts/Isotopes_of_zirconium/NzDqkTRf">86Zr</a></td><td>40</td><td>46</td><td>8.975979</td><td>5.940×104</td><td>16.5</td><td>β+</td><td></td></tr><tr><td>713</td><td><a href="/facts/Isotopes_of_bromine/F7e69E1j">76Br</a></td><td>35</td><td>41</td><td>8.996183</td><td>5.832×104</td><td>16.2</td><td>β+</td><td></td></tr><tr><td>714</td><td><a href="/facts/Isotopes_of_tellurium/cE0X04xU">119Te</a></td><td>52</td><td>67</td><td></td><td>5.778×104</td><td>16.1</td><td>EC, β+ (2.1)</td><td></td></tr><tr><td>658</td><td><a href="/facts/Isotopes_of_dubnium/Px5qt1qv">268Db</a></td><td>105</td><td>163</td><td>7.635133</td><td>1.152×105</td><td>16</td><td>SF, α<a class="footnote-ref" id="fnref:106" href="#fn:106">106</a></td><td></td></tr><tr><td>715</td><td><a href="/facts/Isotopes_of_americium/aqoWt39B">242Am</a></td><td>95</td><td>147</td><td></td><td>5.767×104</td><td>16.0</td><td>β−, EC (17)</td><td></td></tr><tr><td>716</td><td><a href="/facts/Isotopes_of_hafnium/4sCv7aQ6">170Hf</a></td><td>72</td><td>98</td><td>8.402210</td><td>5.764×104</td><td>16.0</td><td>β+</td><td></td></tr><tr><td>717</td><td><a href="/facts/Isotopes_of_europium/IUWzfhMI">157Eu</a></td><td>63</td><td>94</td><td>8.513792</td><td>5.465×104</td><td>15.2</td><td>β−</td><td></td></tr><tr><td>718</td><td><a href="/facts/Isotopes_of_sodium/dGhdEPWX">24Na</a></td><td>11</td><td>13</td><td>8.422082</td><td>5.382×104</td><td>15.0</td><td>β−</td><td>CG, IM</td></tr><tr><td>719</td><td><a href="/facts/Isotopes_of_krypton/8hRKYepJ">76Kr</a></td><td>36</td><td>40</td><td>8.979406</td><td>5.328×104</td><td>14.8</td><td>β+</td><td></td></tr><tr><td>720</td><td><a href="/facts/Isotopes_of_yttrium/GS71S6HJ">86Y</a></td><td>39</td><td>47</td><td>8.993234</td><td>5.306×104</td><td>14.7</td><td>β+</td><td></td></tr><tr><td>721</td><td><a href="/facts/Isotopes_of_radon/QjlmESj0">211Rn</a></td><td>86</td><td>125</td><td>8.112825</td><td>5.256×104</td><td>14.6</td><td>β+, α (27)</td><td></td></tr><tr><td>722</td><td><a href="/facts/Isotopes_of_niobium/nbT6c0vs">90Nb</a></td><td>41</td><td>49</td><td>8.989727</td><td>5.256×104</td><td>14.6</td><td>β+</td><td></td></tr><tr><td>723</td><td><a href="/facts/Isotopes_of_iridium/F1zVVPRq">185Ir</a></td><td>77</td><td>108</td><td>8.289382</td><td>5.184×104</td><td>14.4</td><td>β+</td><td></td></tr><tr><td>724</td><td><a href="/facts/Isotopes_of_uranium/zWIQ6MVL">240U</a></td><td>92</td><td>148</td><td>7.851682</td><td>5.076×104</td><td>14.1</td><td>β−</td><td>DP</td></tr><tr><td>725</td><td><a href="/facts/Isotopes_of_gallium/Wk0C9DbY">72Ga</a></td><td>31</td><td>41</td><td>9.023958</td><td>5.074×104</td><td>14.1</td><td>β−</td><td></td></tr><tr><td>726</td><td><a href="/facts/Isotopes_of_zinc/4QJEMCzx">69mZn</a></td><td>30</td><td>39</td><td>9.056536</td><td>4.954×104</td><td>13.8</td><td>IT, β− (tr)</td><td></td></tr><tr><td>727</td><td><a href="/facts/Isotopes_of_palladium/deN3NNeY">109Pd</a></td><td>46</td><td>63</td><td>8.875061</td><td>4.932×104</td><td>13.7</td><td>β−</td><td></td></tr><tr><td>728</td><td><a href="/facts/Isotopes_of_yttrium/GS71S6HJ">87mY</a></td><td>39</td><td>48</td><td></td><td>4.813×104</td><td>13.4</td><td>IT, β+ (1.6)</td><td></td></tr><tr><td>729</td><td><a href="/facts/Iodine-123/t3hBrGLV">123I</a></td><td>53</td><td>70</td><td>8.786311</td><td>4.760×104</td><td>13.2</td><td>β+</td><td>IM</td></tr><tr><td>730</td><td><a href="/facts/Isotopes_of_osmium/7psC8ylM">191mOs</a></td><td>76</td><td>115</td><td></td><td>4.716×104</td><td>13.1</td><td>IT</td><td></td></tr><tr><td>731</td><td><a href="/facts/Isotopes_of_osmium/7psC8ylM">183Os</a></td><td>76</td><td>107</td><td>8.309907</td><td>4.680×104</td><td>13.0</td><td>β+</td><td></td></tr><tr><td>732</td><td><a href="/facts/Isotopes_of_europium/IUWzfhMI">150mEu</a></td><td>63</td><td>87</td><td></td><td>4.608×104</td><td>12.8</td><td>β−, β+(11)</td><td></td></tr><tr><td>733</td><td><a href="/facts/Copper-64/1KBmNStU">64Cu</a></td><td>29</td><td>35</td><td>9.093581</td><td>4.572×104</td><td>12.7</td><td>β+, β− (38)</td><td>IM</td></tr><tr><td>734</td><td><a href="/facts/Isotopes_of_rhenium/UmIoHfcT">182mRe</a></td><td>75</td><td>107</td><td></td><td>4.572×104</td><td>12.7</td><td>β+</td><td></td></tr><tr><td>735</td><td><a href="/facts/Isotopes_of_platinum/G5CS1TkP">200Pt</a></td><td>78</td><td>122</td><td>8.204342</td><td>4.500×104</td><td>12.5</td><td>β−</td><td></td></tr><tr><td>736</td><td><a href="/facts/Isotopes_of_iodine/HxgH1yJD">130I</a></td><td>53</td><td>77</td><td>8.740035</td><td>4.450×104</td><td>12.4</td><td>β−</td><td></td></tr><tr><td>737</td><td><a href="/facts/Isotopes_of_potassium/xxMtp7JP">42K</a></td><td>19</td><td>23</td><td>8.905175</td><td>4.436×104</td><td>12.3</td><td>β−</td><td>IM</td></tr><tr><td>738</td><td><a href="/facts/Isotopes_of_hafnium/4sCv7aQ6">171Hf</a></td><td>72</td><td>99</td><td>8.395480</td><td>4.356×104</td><td>12.1</td><td>β+</td><td></td></tr><tr><td>739</td><td><a href="/facts/Isotopes_of_americium/aqoWt39B">239Am</a></td><td>95</td><td>144</td><td>7.864666</td><td>4.284×104</td><td>11.9</td><td>β+, α (0.01)</td><td></td></tr><tr><td>740</td><td><a href="/facts/Isotopes_of_mercury/gVVXzNeh">193mHg</a></td><td>80</td><td>113</td><td>8.231483</td><td>4.248×104</td><td>11.8</td><td>β+, IT (7.2)</td><td></td></tr><tr><td>741</td><td><a href="/facts/Isotopes_of_bismuth/DrbTkEzW">203Bi</a></td><td>83</td><td>120</td><td>8.177436</td><td>4.234×104</td><td>11.8</td><td>β+</td><td></td></tr><tr><td>742</td><td><a href="/facts/Isotopes_of_germanium/kLqa6bcf">77Ge</a></td><td>32</td><td>45</td><td>8.996185</td><td>4.068×104</td><td>11.3</td><td>β−</td><td></td></tr><tr><td>743</td><td><a href="/facts/Isotopes_of_bismuth/DrbTkEzW">204Bi</a></td><td>83</td><td>121</td><td>8.172651</td><td>4.039×104</td><td>11.2</td><td>β+</td><td></td></tr><tr><td>744</td><td><a href="/facts/Isotopes_of_platinum/G5CS1TkP">189Pt</a></td><td>78</td><td>111</td><td>8.264359</td><td>3.913×104</td><td>10.9</td><td>β+</td><td></td></tr><tr><td>745</td><td><a href="/facts/Isotopes_of_lead/V9JFUTRo">212Pb</a></td><td>82</td><td>130</td><td>8.106928</td><td>3.830×104</td><td>10.6</td><td>β−</td><td>DP, IM</td></tr><tr><td>746</td><td><a href="/facts/Isotopes_of_mercury/gVVXzNeh">195Hg</a></td><td>80</td><td>115</td><td></td><td>3.791×104</td><td>10.5</td><td>β+</td><td></td></tr><tr><td>747</td><td><a href="/facts/Isotopes_of_tantalum/uPRoIMz1">175Ta</a></td><td>73</td><td>102</td><td>8.370813</td><td>3.780×104</td><td>10.5</td><td>β+</td><td></td></tr><tr><td>748</td><td><a href="/facts/Isotopes_of_plutonium/ASACBN4x">245Pu</a></td><td>94</td><td>151</td><td>7.813752</td><td>3.780×104</td><td>10.5</td><td>β−</td><td></td></tr><tr><td>749</td><td><a href="/facts/Isotopes_of_iridium/F1zVVPRq">187Ir</a></td><td>77</td><td>110</td><td>8.283713</td><td>3.780×104</td><td>10.5</td><td>β+</td><td></td></tr><tr><td>750</td><td><a href="/facts/Isotopes_of_erbium/FH73BFxH">165Er</a></td><td>68</td><td>97</td><td>8.462406</td><td>3.730×104</td><td>10.4</td><td>β+</td><td></td></tr><tr><td>751</td><td><a href="/facts/Isotopes_of_yttrium/GS71S6HJ">93Y</a></td><td>39</td><td>54</td><td>8.976951</td><td>3.665×104</td><td>10.2</td><td>β−</td><td></td></tr><tr><td>752</td><td><a href="/facts/Isotopes_of_americium/aqoWt39B">244Am</a></td><td>95</td><td>149</td><td>7.825914</td><td>3.636×104</td><td>10.1</td><td>β−</td><td></td></tr><tr><td>753</td><td><a href="/facts/Isotopes_of_lawrencium/aCbcBzpk">266Lr</a></td><td>103</td><td>163</td><td></td><td>3.600×104</td><td>10.0</td><td>SF</td><td></td></tr><tr><td>754</td><td><a href="/facts/Isotopes_of_terbium/W0Wxkne3">154m1Tb</a></td><td>65</td><td>89</td><td></td><td>3.598×104</td><td>9.99</td><td>β+, IT(22)</td><td></td></tr><tr><td>755</td><td><a href="/facts/Isotopes_of_osmium/7psC8ylM">183mOs</a></td><td>76</td><td>107</td><td></td><td>3.564×104</td><td>9.90</td><td>β+, IT(15)</td><td></td></tr><tr><td>756</td><td><a href="/facts/Isotopes_of_dysprosium/F62g1Ep8">155Dy</a></td><td>66</td><td>89</td><td>8.517521</td><td>3.564×104</td><td>9.90</td><td>β+</td><td></td></tr><tr><td>757</td><td><a href="/facts/Isotopes_of_strontium/ljDHPVaV">91Sr</a></td><td>38</td><td>53</td><td>8.990503</td><td>3.467×104</td><td>9.63</td><td>β−</td><td></td></tr><tr><td>758</td><td><a href="/facts/Isotopes_of_gold/9a1b4sIe">196m2Au</a></td><td>79</td><td>117</td><td></td><td>3.456×104</td><td>9.60</td><td>IT</td><td></td></tr><tr><td>759</td><td><a href="/facts/Isotopes_of_gallium/Wk0C9DbY">66Ga</a></td><td>31</td><td>35</td><td>9.036843</td><td>3.416×104</td><td>9.49</td><td>β+</td><td></td></tr><tr><td>760</td><td><a href="/facts/Isotopes_of_samarium/e5wQw5B0">156Sm</a></td><td>62</td><td>94</td><td>8.516007</td><td>3.384×104</td><td>9.40</td><td>β−</td><td></td></tr><tr><td>761</td><td><a href="/facts/Isotopes_of_tellurium/cE0X04xU">127Te</a></td><td>52</td><td>75</td><td></td><td>3.366×104</td><td>9.35</td><td>β−</td><td></td></tr><tr><td>762</td><td><a href="/facts/Isotopes_of_lead/V9JFUTRo">201Pb</a></td><td>82</td><td>119</td><td>8.196989</td><td>3.359×104</td><td>9.33</td><td>β+</td><td></td></tr><tr><td>763</td><td><a href="/facts/Isotopes_of_europium/IUWzfhMI">152mEu</a></td><td>63</td><td>89</td><td></td><td>3.352×104</td><td>9.31</td><td>β−, β+(28)</td><td></td></tr><tr><td>764</td><td><a href="/facts/Isotopes_of_zinc/4QJEMCzx">62Zn</a></td><td>30</td><td>32</td><td>9.057957</td><td>3.307×104</td><td>9.19</td><td>β+</td><td></td></tr><tr><td>765</td><td><a href="/facts/Isotopes_of_xenon/Yz78R52h">135Xe</a></td><td>54</td><td>81</td><td>8.711453</td><td>3.290×104</td><td>9.14</td><td>β−</td><td></td></tr><tr><td>766</td><td><a href="/facts/Isotopes_of_cobalt/jIIqGRE3">58mCo</a></td><td>27</td><td>31</td><td></td><td>3.276×104</td><td>9.10</td><td>IT</td><td></td></tr><tr><td>767</td><td><a href="/facts/Isotopes_of_antimony/QMxb6D0V">128Sb</a></td><td>51</td><td>77</td><td>8.732343</td><td>3.244×104</td><td>9.01</td><td>β−</td><td></td></tr><tr><td>768</td><td><a href="/facts/Isotopes_of_cerium/n2LF751R">137Ce</a></td><td>58</td><td>79</td><td></td><td>3.24×104</td><td>9.00</td><td>β+</td><td></td></tr><tr><td>769</td><td><a href="/facts/Isotopes_of_plutonium/ASACBN4x">234Pu</a></td><td>94</td><td>140</td><td>7.898892</td><td>3.168×104</td><td>8.80</td><td>β+, α (~6)</td><td></td></tr><tr><td>770</td><td><a href="/facts/Isotopes_of_tantalum/uPRoIMz1">184Ta</a></td><td>73</td><td>111</td><td>8.304154</td><td>3.132×104</td><td>8.70</td><td>β−</td><td></td></tr><tr><td>771</td><td><a href="/facts/Isotopes_of_einsteinium/Uecqdyr4">250Es</a></td><td>99</td><td>151</td><td>7.778407</td><td>3.096×104</td><td>8.60</td><td>β+, α (<3)</td><td></td></tr><tr><td>772</td><td><a href="/facts/Isotopes_of_palladium/deN3NNeY">101Pd</a></td><td>46</td><td>55</td><td>8.917149</td><td>3.049×104</td><td>8.47</td><td>β+</td><td></td></tr><tr><td>773</td><td><a href="/facts/Isotopes_of_iron/GVebbg1n">52Fe</a></td><td>26</td><td>26</td><td>9.000789</td><td>2.979×104</td><td>8.28</td><td>β+</td><td></td></tr><tr><td>774</td><td><a href="/facts/Isotopes_of_thulium/eqq1cw1P">173Tm</a></td><td>69</td><td>104</td><td>8.396524</td><td>2.966×104</td><td>8.24</td><td>β−</td><td></td></tr><tr><td>775</td><td><a href="/facts/Isotopes_of_tantalum/uPRoIMz1">180Ta</a></td><td>73</td><td>107</td><td></td><td>2.935×104</td><td>8.15</td><td>EC, β− (14)</td><td></td></tr><tr><td>776</td><td><a href="/facts/Isotopes_of_dysprosium/F62g1Ep8">157Dy</a></td><td>66</td><td>91</td><td>8.513544</td><td>2.930×104</td><td>8.14</td><td>β+</td><td></td></tr><tr><td>777</td><td><a href="/facts/Isotopes_of_astatine/vtgd2Cvy">210At</a></td><td>85</td><td>125</td><td>8.128337</td><td>2.916×104</td><td>8.10</td><td>β+, α (0.2)</td><td></td></tr><tr><td>778</td><td><a href="/facts/Isotopes_of_tantalum/uPRoIMz1">176Ta</a></td><td>73</td><td>103</td><td>8.363202</td><td>2.912×104</td><td>8.09</td><td>β+</td><td></td></tr><tr><td>779</td><td><a href="/facts/Isotopes_of_thulium/eqq1cw1P">166Tm</a></td><td>69</td><td>97</td><td>8.444183</td><td>2.772×104</td><td>7.70</td><td>β+</td><td></td></tr><tr><td>780</td><td><a href="/facts/Isotopes_of_einsteinium/Uecqdyr4">256mEs</a></td><td>99</td><td>157</td><td>7.730742</td><td>2.736×104</td><td>7.60</td><td>β−</td><td></td></tr><tr><td>781</td><td><a href="/facts/Isotopes_of_erbium/FH73BFxH">171Er</a></td><td>68</td><td>103</td><td>8.408901</td><td>2.706×104</td><td>7.52</td><td>β−</td><td></td></tr><tr><td>782</td><td><a href="/facts/Isotopes_of_thallium/7BEwqp8j">199Tl</a></td><td>81</td><td>118</td><td>8.212333</td><td>2.671×104</td><td>7.42</td><td>β+</td><td></td></tr><tr><td>783</td><td><a href="/facts/Isotopes_of_astatine/vtgd2Cvy">211At</a></td><td>85</td><td>126</td><td>8.126527</td><td>2.597×104</td><td>7.21</td><td>β+, α (42)</td><td></td></tr><tr><td>784</td><td><a href="/facts/Isotopes_of_selenium/vHHSImg2">73Se</a></td><td>34</td><td>39</td><td>9.005821</td><td>2.574×104</td><td>7.15</td><td>β+</td><td></td></tr><tr><td>785</td><td><a href="/facts/Isotopes_of_molybdenum/gpYnY3bx">93mMo</a></td><td>42</td><td>51</td><td></td><td>2.466×104</td><td>6.85</td><td>IT, β+ (0.1)</td><td></td></tr><tr><td>786</td><td><a href="/facts/Isotopes_of_protactinium/AVGw4A8U">234Pa</a></td><td>91</td><td>143</td><td>7.898930</td><td>2.412×104</td><td>6.70</td><td>β−</td><td>DP</td></tr><tr><td>787</td><td><a href="/facts/Iodine-135/HxgH1yJD">135I</a></td><td>53</td><td>82</td><td>8.691994</td><td>2.365×104</td><td>6.57</td><td>β−</td><td></td></tr><tr><td>788</td><td><a href="/facts/Isotopes_of_cadmium/2F42oNDz">107Cd</a></td><td>48</td><td>59</td><td>8.884271</td><td>2.340×104</td><td>6.50</td><td>β+</td><td></td></tr><tr><td>789</td><td><a href="/facts/Isotopes_of_rubidium/9jc8FbaB">82mRb</a></td><td>37</td><td>45</td><td>8.999608</td><td>2.330×104</td><td>6.47</td><td>β+, IT (<0.3)</td><td></td></tr><tr><td>790</td><td><a href="/facts/Isotopes_of_dysprosium/F62g1Ep8">153Dy</a></td><td>66</td><td>87</td><td>8.523288</td><td>2.304×104</td><td>6.40</td><td>β+, α (tr)</td><td></td></tr><tr><td>791</td><td><a href="/facts/Isotopes_of_caesium/m5AYV9tp">127Cs</a></td><td>55</td><td>72</td><td>8.750383</td><td>2.250×104</td><td>6.25</td><td>β+</td><td></td></tr><tr><td>792</td><td><a href="/facts/Isotopes_of_actinium/vnv59EsB">228Ac</a></td><td>89</td><td>139</td><td>7.944591</td><td>2.214×104</td><td>6.15</td><td>β−</td><td>DP</td></tr><tr><td>793</td><td><a href="/facts/Technetium-99m/HgIqtvrv">99mTc</a></td><td>43</td><td>56</td><td></td><td>2.162×104</td><td>6.01</td><td>IT, β− (tr)</td><td>IM</td></tr><tr><td>794</td><td><a href="/facts/Isotopes_of_praseodymium/8J7u8hCJ">145Pr</a></td><td>59</td><td>86</td><td>8.620514</td><td>2.154×104</td><td>5.98</td><td>β−</td><td></td></tr><tr><td>795</td><td><a href="/facts/Isotopes_of_osmium/7psC8ylM">189mOs</a></td><td>76</td><td>113</td><td></td><td>2.092×104</td><td>5.81</td><td>IT</td><td></td></tr><tr><td>796</td><td><a href="/facts/Isotopes_of_polonium/bIdUTjCm">207Po</a></td><td>84</td><td>123</td><td>8.154158</td><td>2.088×104</td><td>5.80</td><td>β+, α (0.02)</td><td></td></tr><tr><td>797</td><td><a href="/facts/Isotopes_of_molybdenum/gpYnY3bx">90Mo</a></td><td>42</td><td>48</td><td>8.962072</td><td>2.002×104</td><td>5.56</td><td>β+</td><td></td></tr><tr><td>798</td><td><a href="/facts/Isotopes_of_mendelevium/D4aMzPqW">257Md</a></td><td>101</td><td>156</td><td>7.725040</td><td>1.987×104</td><td>5.52</td><td>EC, α (15), SF (tr)</td><td></td></tr><tr><td>799</td><td><a href="/facts/Isotopes_of_palladium/deN3NNeY">111mPd</a></td><td>46</td><td>65</td><td>8.844589</td><td>1.980×104</td><td>5.50</td><td>IT, β− (27)</td><td></td></tr><tr><td>800</td><td><a href="/facts/Isotopes_of_neodymium/ojKx8hWx">139mNd</a></td><td>60</td><td>79</td><td>8.659529</td><td>1.980×104</td><td>5.50</td><td>β+, IT (12)</td><td></td></tr><tr><td>801</td><td><a href="/facts/Isotopes_of_hafnium/4sCv7aQ6">180mHf</a></td><td>72</td><td>108</td><td></td><td>1.969×104</td><td>5.47</td><td>IT, β− (0.3)</td><td></td></tr><tr><td>802</td><td><a href="/facts/Isotopes_of_astatine/vtgd2Cvy">209At</a></td><td>85</td><td>124</td><td>8.132954</td><td>1.948×104</td><td>5.41</td><td>β+, α (4.1)</td><td></td></tr><tr><td>803</td><td><a href="/facts/Isotopes_of_silver/f4jsguS6">113Ag</a></td><td>47</td><td>66</td><td>8.841531</td><td>1.933×104</td><td>5.37</td><td>β−</td><td></td></tr><tr><td>804</td><td><a href="/facts/Isotopes_of_terbium/W0Wxkne3">156m2Tb</a></td><td>65</td><td>91</td><td></td><td>1.908×104</td><td>5.30</td><td>IT (?), β+ (?)</td><td></td></tr><tr><td>805</td><td><a href="/facts/Isotopes_of_thallium/7BEwqp8j">198Tl</a></td><td>81</td><td>117</td><td>8.210166</td><td>1.908×104</td><td>5.30</td><td>β+</td><td></td></tr><tr><td>806</td><td><a href="/facts/Isotopes_of_fermium/1YBM8Su0">251Fm</a></td><td>100</td><td>151</td><td>7.768590</td><td>1.908×104</td><td>5.30</td><td>β+, α (1.8)</td><td></td></tr><tr><td>807</td><td><a href="/facts/Isotopes_of_neodymium/ojKx8hWx">138Nd</a></td><td>60</td><td>78</td><td>8.665661</td><td>1.814×104</td><td>5.04</td><td>β+</td><td></td></tr><tr><td>808</td><td><a href="/facts/Isotopes_of_holmium/zNJ7HJqT">160mHo</a></td><td>67</td><td>93</td><td>8.485877</td><td>1.807×104</td><td>5.02</td><td>IT, β+ (27)</td><td></td></tr><tr><td>809</td><td><a href="/facts/Isotopes_of_antimony/QMxb6D0V">118mSb</a></td><td>51</td><td>67</td><td>8.814963</td><td>1.800×104</td><td>5.00</td><td>β+</td><td></td></tr><tr><td>810</td><td><a href="/facts/Isotopes_of_plutonium/ASACBN4x">243Pu</a></td><td>94</td><td>149</td><td>7.833648</td><td>1.784×104</td><td>4.96</td><td>β−</td><td></td></tr><tr><td>811</td><td><a href="/facts/Isotopes_of_gold/9a1b4sIe">192Au</a></td><td>79</td><td>113</td><td>8.242036</td><td>1.778×104</td><td>4.94</td><td>β+</td><td></td></tr><tr><td>812</td><td><a href="/facts/Isotopes_of_indium/4AVSfBza">110In</a></td><td>49</td><td>61</td><td>8.857464</td><td>1.764×104</td><td>4.90</td><td>β+</td><td></td></tr><tr><td>813</td><td><a href="/facts/Isotopes_of_cerium/n2LF751R">133mCe</a></td><td>58</td><td>75</td><td>8.690771</td><td>1.764×104</td><td>4.90</td><td>β+</td><td></td></tr><tr><td>814</td><td><a href="/facts/Isotopes_of_technetium/WrV3Wrrs">94Tc</a></td><td>43</td><td>51</td><td>8.966583</td><td>1.758×104</td><td>4.88</td><td>β+</td><td></td></tr><tr><td>815</td><td><a href="/facts/Isotopes_of_yttrium/GS71S6HJ">85mY</a></td><td>39</td><td>46</td><td>8.986880</td><td>1.750×104</td><td>4.86</td><td>β+, IT (tr)</td><td></td></tr><tr><td>816</td><td><a href="/facts/Isotopes_of_gallium/Wk0C9DbY">73Ga</a></td><td>31</td><td>42</td><td>9.026112</td><td>1.750×104</td><td>4.86</td><td>β−</td><td></td></tr><tr><td>817</td><td><a href="/facts/Isotopes_of_mercury/gVVXzNeh">192Hg</a></td><td>80</td><td>112</td><td>8.238051</td><td>1.746×104</td><td>4.85</td><td>β+</td><td></td></tr><tr><td>818</td><td><a href="/facts/Isotopes_of_lanthanum/dT37muIv">132La</a></td><td>57</td><td>75</td><td>8.705721</td><td>1.728×104</td><td>4.80</td><td>β+</td><td></td></tr><tr><td>819</td><td><a href="/facts/Isotopes_of_rhodium/fYAb2dz8">99mRh</a></td><td>45</td><td>54</td><td></td><td>1.692×104</td><td>4.70</td><td>β+, IT (<0.16)</td><td></td></tr><tr><td>820</td><td><a href="/facts/Isotopes_of_dubnium/Px5qt1qv">267Db</a></td><td>105</td><td>162</td><td>7.644361</td><td>1.656×104</td><td>4.60</td><td>SF</td><td></td></tr><tr><td>821</td><td><a href="/facts/Isotopes_of_lutetium/yUu2IeCp">179Lu</a></td><td>71</td><td>108</td><td>8.345428</td><td>1.652×104</td><td>4.59</td><td>β−</td><td></td></tr><tr><td>822</td><td><a href="/facts/Isotopes_of_rubidium/9jc8FbaB">81Rb</a></td><td>37</td><td>44</td><td>9.002871</td><td>1.645×104</td><td>4.57</td><td>β+</td><td>IM</td></tr><tr><td>823</td><td><a href="/facts/Isotopes_of_berkelium/RnvnlKK4">243Bk</a></td><td>97</td><td>146</td><td>7.829801</td><td>1.620×104</td><td>4.50</td><td>β+, α (~0.15)</td><td></td></tr><tr><td>824</td><td><a href="/facts/Isotopes_of_indium/4AVSfBza">115mIn</a></td><td>49</td><td>66</td><td></td><td>1.615×104</td><td>4.49</td><td>IT, β− (5.0)</td><td></td></tr><tr><td>825</td><td><a href="/facts/Isotopes_of_krypton/8hRKYepJ">85mKr</a></td><td>36</td><td>49</td><td></td><td>1.613×104</td><td>4.48</td><td>β−, IT (21)</td><td></td></tr><tr><td>826</td><td><a href="/facts/Isotopes_of_ruthenium/C9GGqqPM">105Ru</a></td><td>44</td><td>61</td><td>8.889689</td><td>1.598×104</td><td>4.44</td><td>β−</td><td></td></tr><tr><td>827</td><td><a href="/facts/Isotopes_of_bromine/F7e69E1j">80mBr</a></td><td>35</td><td>45</td><td>9.018872</td><td>1.591×104</td><td>4.42</td><td>IT</td><td></td></tr><tr><td>828</td><td><a href="/facts/Isotopes_of_praseodymium/8J7u8hCJ">139Pr</a></td><td>59</td><td>80</td><td>8.681565</td><td>1.588×104</td><td>4.41</td><td>β+</td><td></td></tr><tr><td>829</td><td><a href="/facts/Isotopes_of_antimony/QMxb6D0V">129Sb</a></td><td>51</td><td>78</td><td>8.727358</td><td>1.584×104</td><td>4.40</td><td>β−</td><td></td></tr><tr><td>830</td><td><a href="/facts/Isotopes_of_berkelium/RnvnlKK4">244Bk</a></td><td>97</td><td>147</td><td>7.822491</td><td>1.566×104</td><td>4.35</td><td>β+, α (tr)</td><td></td></tr><tr><td>831</td><td><a href="/facts/Isotopes_of_indium/4AVSfBza">109In</a></td><td>49</td><td>60</td><td>8.864805</td><td>1.512×104</td><td>4.20</td><td>β+</td><td></td></tr><tr><td>832</td><td><a href="/facts/Isotopes_of_hafnium/4sCv7aQ6">184Hf</a></td><td>72</td><td>112</td><td>8.296871</td><td>1.483×104</td><td>4.12</td><td>β−</td><td></td></tr><tr><td>833</td><td><a href="/facts/Isotopes_of_terbium/W0Wxkne3">149Tb</a></td><td>65</td><td>84</td><td>8.551166</td><td>1.482×104</td><td>4.12</td><td>β+, α (17)</td><td></td></tr><tr><td>834</td><td><a href="/facts/Isotopes_of_tin/C3yupbqu">110Sn</a></td><td>50</td><td>60</td><td>8.851727</td><td>1.480×104</td><td>4.11</td><td>β+</td><td></td></tr><tr><td>835</td><td><a href="/facts/Isotopes_of_scandium/avIUruhT">44Sc</a></td><td>21</td><td>23</td><td></td><td>1.429×104</td><td>3.97</td><td>β+</td><td></td></tr><tr><td>836</td><td><a href="/facts/Isotopes_of_zinc/4QJEMCzx">71mZn</a></td><td>30</td><td>41</td><td>9.017370</td><td>1.426×104</td><td>3.96</td><td>β−, IT (tr)</td><td></td></tr><tr><td>837</td><td><a href="/facts/Isotopes_of_lanthanum/dT37muIv">141La</a></td><td>57</td><td>84</td><td>8.659540</td><td>1.411×104</td><td>3.92</td><td>β−</td><td></td></tr><tr><td>838</td><td><a href="/facts/Isotopes_of_lanthanum/dT37muIv">133La</a></td><td>57</td><td>76</td><td>8.714109</td><td>1.408×104</td><td>3.91</td><td>β+</td><td></td></tr><tr><td>839</td><td><a href="/facts/Isotopes_of_scandium/avIUruhT">43Sc</a></td><td>21</td><td>22</td><td>8.912907</td><td>1.401×104</td><td>3.89</td><td>β+</td><td></td></tr><tr><td>840</td><td><a href="/facts/Isotopes_of_iridium/F1zVVPRq">195mIr</a></td><td>77</td><td>118</td><td>8.233326</td><td>1.368×104</td><td>3.80</td><td>β−, IT (5)</td><td></td></tr><tr><td>841</td><td><a href="/facts/Isotopes_of_mercury/gVVXzNeh">193Hg</a></td><td>80</td><td>113</td><td></td><td>1.368×104</td><td>3.80</td><td>β+</td><td></td></tr><tr><td>842</td><td><a href="/facts/Isotopes_of_lutetium/yUu2IeCp">176mLu</a></td><td>71</td><td>105</td><td></td><td>1.319×104</td><td>3.66</td><td>β−, EC (0.1)</td><td></td></tr><tr><td>843</td><td><a href="/facts/Isotopes_of_lawrencium/aCbcBzpk">262Lr</a></td><td>103</td><td>159</td><td>7.681556</td><td>1.296×104</td><td>3.60</td><td>SF, β+, α</td><td></td></tr><tr><td>844</td><td><a href="/facts/Isotopes_of_lead/V9JFUTRo">202mPb</a></td><td>82</td><td>120</td><td></td><td>1.274×104</td><td>3.54</td><td>IT, β+ (9.5)</td><td></td></tr><tr><td>845</td><td><a href="/facts/Isotopes_of_yttrium/GS71S6HJ">92Y</a></td><td>39</td><td>53</td><td>8.993208</td><td>1.274×104</td><td>3.54</td><td>β−</td><td></td></tr><tr><td>846</td><td><a href="/facts/Isotopes_of_polonium/bIdUTjCm">204Po</a></td><td>84</td><td>120</td><td>8.161200</td><td>1.271×104</td><td>3.53</td><td>β+, α (0.7)</td><td></td></tr><tr><td>847</td><td><a href="/facts/Isotopes_of_cerium/n2LF751R">132Ce</a></td><td>58</td><td>74</td><td>8.696131</td><td>1.264×104</td><td>3.51</td><td>β+</td><td></td></tr><tr><td>848</td><td><a href="/facts/Isotopes_of_terbium/W0Wxkne3">150Tb</a></td><td>65</td><td>85</td><td>8.545394</td><td>1.253×104</td><td>3.48</td><td>β+, α (tr)</td><td></td></tr><tr><td>849</td><td><a href="/facts/Isotopes_of_cadmium/2F42oNDz">117mCd</a></td><td>48</td><td>69</td><td>8.808840</td><td>1.210×104</td><td>3.36</td><td>β−</td><td></td></tr><tr><td>850</td><td><a href="/facts/Isotopes_of_copper/1YpAhChe">61Cu</a></td><td>29</td><td>32</td><td>9.087452</td><td>1.200×104</td><td>3.33</td><td>β+</td><td></td></tr><tr><td>851</td><td><a href="/facts/Isotopes_of_lead/V9JFUTRo">209Pb</a></td><td>82</td><td>127</td><td>8.155607</td><td>1.171×104</td><td>3.25</td><td>β−</td><td>DP</td></tr><tr><td>852</td><td><a href="/facts/Isotopes_of_fermium/1YBM8Su0">254Fm</a></td><td>100</td><td>154</td><td>7.752808</td><td>1.166×104</td><td>3.24</td><td>α, SF (0.06)</td><td></td></tr><tr><td>853</td><td><a href="/facts/Isotopes_of_berkelium/RnvnlKK4">250Bk</a></td><td>97</td><td>153</td><td>7.779523</td><td>1.156×104</td><td>3.21</td><td>β−</td><td></td></tr><tr><td>854</td><td><a href="/facts/Isotopes_of_erbium/FH73BFxH">161Er</a></td><td>68</td><td>93</td><td>8.476352</td><td>1.156×104</td><td>3.21</td><td>β+</td><td></td></tr><tr><td>855</td><td><a href="/facts/Isotopes_of_rhenium/UmIoHfcT">190mRe</a></td><td>75</td><td>115</td><td>8.257433</td><td>1.152×104</td><td>3.20</td><td>β− (54), IT</td><td></td></tr><tr><td>856</td><td><a href="/facts/Isotopes_of_yttrium/GS71S6HJ">90mY</a></td><td>39</td><td>51</td><td></td><td>1.148×104</td><td>3.19</td><td>IT, β− (tr)</td><td></td></tr><tr><td>857</td><td><a href="/facts/Isotopes_of_gold/9a1b4sIe">191Au</a></td><td>79</td><td>112</td><td>8.248343</td><td>1.145×104</td><td>3.18</td><td>β+</td><td></td></tr><tr><td>858</td><td><a href="/facts/Isotopes_of_tantalum/uPRoIMz1">173Ta</a></td><td>73</td><td>100</td><td>8.374218</td><td>1.130×104</td><td>3.14</td><td>β+</td><td></td></tr><tr><td>859</td><td><a href="/facts/Isotopes_of_silver/f4jsguS6">112Ag</a></td><td>47</td><td>65</td><td>8.844756</td><td>1.127×104</td><td>3.13</td><td>β−</td><td></td></tr><tr><td>860</td><td><a href="/facts/Isotopes_of_californium/tX06MlFX">247Cf</a></td><td>98</td><td>149</td><td>7.803566</td><td>1.120×104</td><td>3.11</td><td>β+, α (0.04)</td><td></td></tr><tr><td>861</td><td><a href="/facts/Isotopes_of_iridium/F1zVVPRq">184Ir</a></td><td>77</td><td>107</td><td>8.286599</td><td>1.112×104</td><td>3.09</td><td>β+</td><td></td></tr><tr><td>862</td><td><a href="/facts/Isotopes_of_iridium/F1zVVPRq">190m3Ir</a></td><td>77</td><td>113</td><td></td><td>1.111×104</td><td>3.09</td><td>β+, IT (8.6)</td><td></td></tr><tr><td>863</td><td><a href="/facts/Isotopes_of_titanium/EkvlaFew">45Ti</a></td><td>22</td><td>23</td><td>8.938121</td><td>1.109×104</td><td>3.08</td><td>β+</td><td></td></tr><tr><td>864</td><td><a href="/facts/Isotopes_of_holmium/zNJ7HJqT">167Ho</a></td><td>67</td><td>100</td><td>8.444304</td><td>1.081×104</td><td>3.00</td><td>β−</td><td></td></tr><tr><td>865</td><td><a href="/facts/Isotopes_of_lawrencium/aCbcBzpk">264Lr</a></td><td>103</td><td>161</td><td></td><td>1.081×104</td><td>3.00</td><td>SF<a class="footnote-ref" id="fnref:107" href="#fn:107">107</a></td><td></td></tr><tr><td>866</td><td><a href="/facts/Isotopes_of_samarium/e5wQw5B0">134Sm</a></td><td>62</td><td>72</td><td></td><td>1.048×104</td><td>2.91</td><td>IT</td><td></td></tr><tr><td>867</td><td><a href="/facts/Isotopes_of_curium/WnMh6VLE">239Cm</a></td><td>96</td><td>143</td><td>7.857143</td><td>1.044×104</td><td>2.90</td><td>β+, α (tr)</td><td></td></tr><tr><td>868</td><td><a href="/facts/Isotopes_of_thallium/7BEwqp8j">197Tl</a></td><td>81</td><td>116</td><td>8.215190</td><td>1.022×104</td><td>2.84</td><td>β+</td><td></td></tr><tr><td>869</td><td><a href="/facts/Isotopes_of_krypton/8hRKYepJ">88Kr</a></td><td>36</td><td>52</td><td>8.976918</td><td>1.022×104</td><td>2.84</td><td>β−</td><td></td></tr><tr><td>870</td><td><a href="/facts/Isotopes_of_sulfur/08Qs8w3o">38S</a></td><td>16</td><td>22</td><td>8.778196</td><td>1.022×104</td><td>2.84</td><td>β−</td><td></td></tr><tr><td>871</td><td><a href="/facts/Isotopes_of_strontium/ljDHPVaV">87mSr</a></td><td>38</td><td>49</td><td></td><td>1.013×104</td><td>2.82</td><td>IT, EC (0.3)</td><td></td></tr><tr><td>872</td><td><a href="/facts/Isotopes_of_antimony/QMxb6D0V">117Sb</a></td><td>51</td><td>66</td><td>8.828977</td><td>1.008×104</td><td>2.80</td><td>β+</td><td></td></tr><tr><td>873</td><td><a href="/facts/Isotopes_of_actinium/vnv59EsB">224Ac</a></td><td>89</td><td>135</td><td>7.980993</td><td>1.001×104</td><td>2.78</td><td>β+, α (9.4), β−(<1.6)</td><td></td></tr><tr><td>874</td><td><a href="/facts/Isotopes_of_technetium/WrV3Wrrs">93Tc</a></td><td>43</td><td>50</td><td>8.970274</td><td>9.900×103</td><td>2.75</td><td>β+</td><td></td></tr><tr><td>875</td><td><a href="/facts/Isotopes_of_yttrium/GS71S6HJ">85Y</a></td><td>39</td><td>46</td><td></td><td>9.648×103</td><td>2.68</td><td>β+</td><td></td></tr><tr><td>876</td><td><a href="/facts/Isotopes_of_promethium/V6UzIbHz">150Pm</a></td><td>61</td><td>89</td><td>8.562014</td><td>9.648×103</td><td>2.68</td><td>β−</td><td></td></tr><tr><td>877</td><td><a href="/facts/Isotopes_of_strontium/ljDHPVaV">92Sr</a></td><td>38</td><td>54</td><td>8.972067</td><td>9.576×103</td><td>2.66</td><td>β−</td><td></td></tr><tr><td>878</td><td><a href="/facts/Isotopes_of_fermium/1YBM8Su0">256Fm</a></td><td>100</td><td>156</td><td>7.737398</td><td>9.456×103</td><td>2.63</td><td>SF, α (8.1)</td><td></td></tr><tr><td>879</td><td><a href="/facts/Isotopes_of_silicon/8NzaY3wR">31Si</a></td><td>14</td><td>17</td><td>8.811618</td><td>9.438×103</td><td>2.62</td><td>β−</td><td>CG</td></tr><tr><td>880</td><td><a href="/facts/Isotopes_of_manganese/NUERgknG">56Mn</a></td><td>25</td><td>31</td><td>9.087572</td><td>9.284×103</td><td>2.58</td><td>β−</td><td></td></tr><tr><td>881</td><td><a href="/facts/Isotopes_of_nickel/3jPqldnR">65Ni</a></td><td>28</td><td>37</td><td>9.073267</td><td>9.062×103</td><td>2.52</td><td>β−</td><td></td></tr><tr><td>882</td><td><a href="/facts/Isotopes_of_iridium/F1zVVPRq">195Ir</a></td><td>77</td><td>118</td><td></td><td>9×103</td><td>2.50</td><td>β−</td><td></td></tr><tr><td>883</td><td><a href="/facts/Isotopes_of_tungsten/hsYx9Wbb">176W</a></td><td>74</td><td>102</td><td>8.359055</td><td>9.000×103</td><td>2.50</td><td>β+</td><td></td></tr><tr><td>884</td><td><a href="/facts/Isotopes_of_cadmium/2F42oNDz">117Cd</a></td><td>48</td><td>69</td><td></td><td>8.964×103</td><td>2.49</td><td>β−</td><td></td></tr><tr><td>885</td><td><a href="/facts/Isotopes_of_tellurium/cE0X04xU">116Te</a></td><td>52</td><td>64</td><td>8.806414</td><td>8.964×103</td><td>2.49</td><td>β+</td><td></td></tr><tr><td>886</td><td><a href="/facts/Isotopes_of_neodymium/ojKx8hWx">141Nd</a></td><td>60</td><td>81</td><td>8.668476</td><td>8.964×103</td><td>2.49</td><td>β+</td><td></td></tr><tr><td>887</td><td><a href="/facts/Isotopes_of_holmium/zNJ7HJqT">161Ho</a></td><td>67</td><td>94</td><td>8.488737</td><td>8.928×103</td><td>2.48</td><td>β+</td><td></td></tr><tr><td>888</td><td><a href="/facts/Isotopes_of_radon/QjlmESj0">210Rn</a></td><td>86</td><td>124</td><td>8.117032</td><td>8.640×103</td><td>2.40</td><td>α (96), β+</td><td></td></tr><tr><td>889</td><td><a href="/facts/Isotopes_of_lead/V9JFUTRo">198Pb</a></td><td>82</td><td>116</td><td>8.202893</td><td>8.640×103</td><td>2.40</td><td>β+</td><td></td></tr><tr><td>890</td><td><a href="/facts/Isotopes_of_curium/WnMh6VLE">238Cm</a></td><td>96</td><td>142</td><td>7.863764</td><td>8.640×103</td><td>2.40</td><td>β+, α</td><td></td></tr><tr><td>891</td><td><a href="/facts/Isotopes_of_bromine/F7e69E1j">83Br</a></td><td>35</td><td>48</td><td>9.023243</td><td>8.640×103</td><td>2.40</td><td>β−</td><td></td></tr><tr><td>892</td><td><a href="/facts/Isotopes_of_dysprosium/F62g1Ep8">152Dy</a></td><td>66</td><td>86</td><td>8.532670</td><td>8.568×103</td><td>2.38</td><td>β+, α (0.1)</td><td>IM</td></tr><tr><td>893</td><td><a href="/facts/Isotopes_of_tantalum/uPRoIMz1">178mTa</a></td><td>73</td><td>105</td><td>8.355075</td><td>8.496×103</td><td>2.36</td><td>β+</td><td></td></tr><tr><td>894</td><td><a href="/facts/Isotopes_of_platinum/G5CS1TkP">187Pt</a></td><td>78</td><td>109</td><td>8.267638</td><td>8.460×103</td><td>2.35</td><td>β+</td><td></td></tr><tr><td>895</td><td><a href="/facts/Isotopes_of_dysprosium/F62g1Ep8">165Dy</a></td><td>66</td><td>99</td><td>8.456891</td><td>8.402×103</td><td>2.33</td><td>β−</td><td></td></tr><tr><td>896</td><td><a href="/facts/Isotopes_of_iodine/HxgH1yJD">132I</a></td><td>53</td><td>79</td><td>8.720570</td><td>8.262×103</td><td>2.30</td><td>β−</td><td></td></tr><tr><td>897</td><td><a href="/facts/Isotopes_of_erbium/FH73BFxH">158Er</a></td><td>68</td><td>90</td><td>8.484619</td><td>8.244×103</td><td>2.29</td><td>β+</td><td></td></tr><tr><td>898</td><td><a href="/facts/Isotopes_of_germanium/kLqa6bcf">66Ge</a></td><td>32</td><td>34</td><td>9.004964</td><td>8.136×103</td><td>2.26</td><td>β+</td><td></td></tr><tr><td>899</td><td><a href="/facts/Isotopes_of_barium/qajGloJP">129Ba</a></td><td>56</td><td>73</td><td>8.730746</td><td>8.028×103</td><td>2.23</td><td>β+</td><td></td></tr><tr><td>900</td><td><a href="/facts/Isotopes_of_samarium/e5wQw5B0">150Sm</a></td><td>62</td><td>88</td><td></td><td>7.992×103</td><td>2.22</td><td>β+, α (tr?)</td><td></td></tr><tr><td>901</td><td><a href="/facts/Isotopes_of_tungsten/hsYx9Wbb">177W</a></td><td>74</td><td>103</td><td>8.352118</td><td>7.920×103</td><td>2.20</td><td>β+</td><td></td></tr><tr><td>902</td><td><a href="/facts/Isotopes_of_rhodium/fYAb2dz8">106mRh</a></td><td>45</td><td>61</td><td>8.884761</td><td>7.860×103</td><td>2.18</td><td>β−</td><td></td></tr><tr><td>903</td><td><a href="/facts/Isotopes_of_barium/qajGloJP">129mBa</a></td><td>56</td><td>73</td><td></td><td>7.776×103</td><td>2.16</td><td>β+, IT (tr?)</td><td></td></tr><tr><td>904</td><td><a href="/facts/Isotopes_of_praseodymium/8J7u8hCJ">138mPr</a></td><td>59</td><td>79</td><td>8.671088</td><td>7.632×103</td><td>2.12</td><td>β+</td><td></td></tr><tr><td>905</td><td><a href="/facts/Isotopes_of_iodine/HxgH1yJD">121I</a></td><td>53</td><td>68</td><td>8.784443</td><td>7.632×103</td><td>2.12</td><td>β+</td><td></td></tr><tr><td>906</td><td><a href="/facts/Isotopes_of_tin/C3yupbqu">127Sn</a></td><td>50</td><td>77</td><td>8.728800</td><td>7.560×103</td><td>2.10</td><td>β−</td><td></td></tr><tr><td>907</td><td><a href="/facts/Isotopes_of_xenon/Yz78R52h">123Xe</a></td><td>54</td><td>69</td><td>8.764409</td><td>7.488×103</td><td>2.08</td><td>β+</td><td></td></tr><tr><td>908</td><td><a href="/facts/Isotopes_of_platinum/G5CS1TkP">186Pt</a></td><td>78</td><td>108</td><td>8.274897</td><td>7.488×103</td><td>2.08</td><td>β+, α (tr)</td><td></td></tr><tr><td>909</td><td><a href="/facts/Isotopes_of_americium/aqoWt39B">245Am</a></td><td>95</td><td>150</td><td>7.818674</td><td>7.380×103</td><td>2.05</td><td>β−</td><td></td></tr><tr><td>910</td><td><a href="/facts/Isotopes_of_niobium/nbT6c0vs">89Nb</a></td><td>41</td><td>48</td><td>8.977507</td><td>7.308×103</td><td>2.03</td><td>β+</td><td></td></tr><tr><td>911</td><td><a href="/facts/Isotopes_of_osmium/7psC8ylM">195mOs</a></td><td>76</td><td>119</td><td></td><td>7.2×103</td><td>2.00</td><td>β−, IT (?)</td><td></td></tr><tr><td>912</td><td><a href="/facts/Isotopes_of_indium/4AVSfBza">117mIn</a></td><td>49</td><td>68</td><td>8.828849</td><td>6.972×103</td><td>1.94</td><td>β−, IT (47)</td><td></td></tr><tr><td>913</td><td><a href="/facts/Isotopes_of_iridium/F1zVVPRq">186mIr</a></td><td>77</td><td>109</td><td></td><td>6.912×103</td><td>1.92</td><td>β+, IT (~25)</td><td></td></tr><tr><td>914</td><td><a href="/facts/Isotopes_of_ytterbium/76nIxUvr">177Yb</a></td><td>70</td><td>107</td><td>8.359401</td><td>6.880×103</td><td>1.91</td><td>β−</td><td></td></tr><tr><td>915</td><td><a href="/facts/Isotopes_of_thallium/7BEwqp8j">198mTl</a></td><td>81</td><td>117</td><td></td><td>6.732×103</td><td>1.87</td><td>β+, IT (44)</td><td></td></tr><tr><td>916</td><td><a href="/facts/Isotopes_of_thallium/7BEwqp8j">196Tl</a></td><td>81</td><td>115</td><td>8.211618</td><td>6.624×103</td><td>1.84</td><td>β+</td><td></td></tr><tr><td>917</td><td><a href="/facts/Isotopes_of_krypton/8hRKYepJ">83m2Kr</a></td><td>36</td><td>47</td><td></td><td>6.588×103</td><td>1.83</td><td>IT</td><td></td></tr><tr><td>918</td><td><a href="/facts/Fluorine-18/4VpH1NYh">18F</a></td><td>9</td><td>9</td><td>8.022789</td><td>6.585×103</td><td>1.83</td><td>β+</td><td>CG, IM</td></tr><tr><td>919</td><td><a href="/facts/Isotopes_of_argon/BhxtyJGu">41Ar</a></td><td>18</td><td>23</td><td>8.877852</td><td>6.577×103</td><td>1.83</td><td>β−</td><td>CG</td></tr><tr><td>920</td><td><a href="/facts/Isotopes_of_thulium/eqq1cw1P">163Tm</a></td><td>69</td><td>94</td><td>8.456205</td><td>6.516×103</td><td>1.81</td><td>β+</td><td></td></tr><tr><td>921</td><td><a href="/facts/Isotopes_of_protactinium/AVGw4A8U">239Pa</a></td><td>91</td><td>148</td><td>7.848148</td><td>6.480×103</td><td>1.80</td><td>β−</td><td></td></tr><tr><td>922</td><td><a href="/facts/Isotopes_of_bismuth/DrbTkEzW">201Bi</a></td><td>83</td><td>118</td><td>8.177875</td><td>6.480×103</td><td>1.80</td><td>β+, α</td><td></td></tr><tr><td>923</td><td><a href="/facts/Isotopes_of_astatine/vtgd2Cvy">207At</a></td><td>85</td><td>122</td><td>8.135303</td><td>6.480×103</td><td>1.80</td><td>β+, α (~10)</td><td></td></tr><tr><td>924</td><td><a href="/facts/Isotopes_of_radon/QjlmESj0">224Rn</a></td><td>86</td><td>138</td><td>7.971327</td><td>6.420×103</td><td>1.78</td><td>β−</td><td></td></tr><tr><td>925</td><td><a href="/facts/Isotopes_of_strontium/ljDHPVaV">80Sr</a></td><td>38</td><td>42</td><td>8.950177</td><td>6.378×103</td><td>1.77</td><td>β+</td><td></td></tr><tr><td>926</td><td><a href="/facts/Isotopes_of_osmium/7psC8ylM">181Os</a></td><td>76</td><td>105</td><td>8.311935</td><td>6.300×103</td><td>1.75</td><td>β+</td><td></td></tr><tr><td>927</td><td><a href="/facts/Isotopes_of_polonium/bIdUTjCm">205Po</a></td><td>84</td><td>121</td><td>8.156737</td><td>6.264×103</td><td>1.74</td><td>β+, α (0.04)</td><td></td></tr><tr><td>928</td><td><a href="/facts/Isotopes_of_neodymium/ojKx8hWx">149Nd</a></td><td>60</td><td>89</td><td>8.570529</td><td>6.221×103</td><td>1.73</td><td>β−</td><td></td></tr><tr><td>929</td><td><a href="/facts/Isotopes_of_bismuth/DrbTkEzW">202Bi</a></td><td>83</td><td>119</td><td>8.173966</td><td>6.192×103</td><td>1.72</td><td>β+, α (tr)</td><td></td></tr><tr><td>930</td><td><a href="/facts/Isotopes_of_einsteinium/Uecqdyr4">249Es</a></td><td>99</td><td>150</td><td>7.785464</td><td>6.132×103</td><td>1.70</td><td>β+~, α (0.6)</td><td></td></tr><tr><td>931</td><td><a href="/facts/Isotopes_of_terbium/W0Wxkne3">147Tb</a></td><td>65</td><td>82</td><td>8.552634</td><td>6.120×103</td><td>1.70</td><td>β+</td><td></td></tr><tr><td>932</td><td><a href="/facts/Isotopes_of_zirconium/NzDqkTRf">87Zr</a></td><td>40</td><td>47</td><td>8.983373</td><td>6.048×103</td><td>1.68</td><td>β+</td><td></td></tr><tr><td>933</td><td><a href="/facts/Isotopes_of_barium/qajGloJP">126Ba</a></td><td>56</td><td>70</td><td>8.727439</td><td>6.000×103</td><td>1.67</td><td>β+</td><td></td></tr><tr><td>934</td><td><a href="/facts/Isotopes_of_indium/4AVSfBza">113mIn</a></td><td>49</td><td>64</td><td></td><td>5.968×103</td><td>1.66</td><td>IT</td><td></td></tr><tr><td>935</td><td><a href="/facts/Isotopes_of_cobalt/jIIqGRE3">61Co</a></td><td>27</td><td>34</td><td>9.102449</td><td>5.940×103</td><td>1.65</td><td>β−</td><td></td></tr><tr><td>936</td><td><a href="/facts/Isotopes_of_ruthenium/C9GGqqPM">95Ru</a></td><td>44</td><td>51</td><td>8.949749</td><td>5.915×103</td><td>1.64</td><td>β+</td><td></td></tr><tr><td>937</td><td><a href="/facts/Isotopes_of_americium/aqoWt39B">238Am</a></td><td>95</td><td>143</td><td>7.867882</td><td>5.880×103</td><td>1.63</td><td>β+,α (tr)</td><td></td></tr><tr><td>938</td><td><a href="/facts/Isotopes_of_astatine/vtgd2Cvy">208At</a></td><td>85</td><td>123</td><td>8.131376</td><td>5.868×103</td><td>1.63</td><td>β+, α (0.6)</td><td></td></tr><tr><td>939</td><td><a href="/facts/Isotopes_of_cerium/n2LF751R">133Ce</a></td><td>58</td><td>75</td><td></td><td>5.82×103</td><td>1.62</td><td>β+</td><td></td></tr><tr><td>940</td><td><a href="/facts/Isotopes_of_bromine/F7e69E1j">75Br</a></td><td>35</td><td>40</td><td>8.993181</td><td>5.802×103</td><td>1.61</td><td>β+</td><td></td></tr><tr><td>941</td><td><a href="/facts/Isotopes_of_europium/IUWzfhMI">152m5Eu</a></td><td>63</td><td>89</td><td></td><td>5.76×103</td><td>1.60</td><td>IT</td><td></td></tr><tr><td>942</td><td><a href="/facts/Isotopes_of_mendelevium/D4aMzPqW">259Md</a></td><td>101</td><td>158</td><td>7.709860</td><td>5.760×103</td><td>1.60</td><td>SF, α (<1.3)</td><td></td></tr><tr><td>943</td><td><a href="/facts/Isotopes_of_platinum/G5CS1TkP">197mPt</a></td><td>78</td><td>119</td><td></td><td>5.725×103</td><td>1.59</td><td>IT, β− (3.3)</td><td></td></tr><tr><td>944</td><td><a href="/facts/Isotopes_of_radium/T0SlGtRH">230Ra</a></td><td>88</td><td>142</td><td>7.921249</td><td>5.580×103</td><td>1.55</td><td>β−</td><td></td></tr><tr><td>945</td><td><a href="/facts/Isotopes_of_lanthanum/dT37muIv">142La</a></td><td>57</td><td>85</td><td>8.634954</td><td>5.466×103</td><td>1.52</td><td>β−</td><td></td></tr><tr><td>946</td><td><a href="/facts/Isotopes_of_arsenic/VvoUD0pG">78As</a></td><td>33</td><td>45</td><td>9.004879</td><td>5.442×103</td><td>1.51</td><td>β−</td><td></td></tr><tr><td>947</td><td><a href="/facts/Isotopes_of_lead/V9JFUTRo">199Pb</a></td><td>82</td><td>117</td><td>8.198111</td><td>5.400×103</td><td>1.50</td><td>β+</td><td></td></tr><tr><td>948</td><td><a href="/facts/Isotopes_of_germanium/kLqa6bcf">78Ge</a></td><td>32</td><td>46</td><td>8.992635</td><td>5.280×103</td><td>1.47</td><td>β−</td><td></td></tr><tr><td>949</td><td><a href="/facts/Isotopes_of_californium/tX06MlFX">255Cf</a></td><td>98</td><td>157</td><td>7.738739</td><td>5.100×103</td><td>1.42</td><td>β−</td><td></td></tr><tr><td>950</td><td><a href="/facts/Isotopes_of_thallium/7BEwqp8j">196mTl</a></td><td>81</td><td>115</td><td></td><td>5.076×103</td><td>1.41</td><td>β+, IT (3.8)</td><td></td></tr><tr><td>951</td><td><a href="/facts/Isotopes_of_iridium/F1zVVPRq">196mIr</a></td><td>77</td><td>119</td><td>8.219440</td><td>5.040×103</td><td>1.40</td><td>β−, IT (<0.3)</td><td></td></tr><tr><td>952</td><td><a href="/facts/Isotopes_of_iodine/HxgH1yJD">132mI</a></td><td>53</td><td>79</td><td></td><td>4.993×103</td><td>1.39</td><td>IT, β− (14)</td><td></td></tr><tr><td>953</td><td><a href="/facts/Isotopes_of_barium/qajGloJP">139Ba</a></td><td>56</td><td>83</td><td>8.682217</td><td>4.984×103</td><td>1.38</td><td>β−</td><td></td></tr><tr><td>954</td><td><a href="/facts/Isotopes_of_germanium/kLqa6bcf">75Ge</a></td><td>32</td><td>43</td><td>9.029413</td><td>4.967×103</td><td>1.38</td><td>β−</td><td></td></tr><tr><td>955</td><td><a href="/facts/Isotopes_of_iodine/HxgH1yJD">120I</a></td><td>53</td><td>67</td><td>8.769577</td><td>4.896×103</td><td>1.36</td><td>β+</td><td></td></tr><tr><td>956</td><td><a href="/facts/Isotopes_of_dubnium/Px5qt1qv">266Db</a></td><td>105</td><td>161</td><td></td><td>4.8×103</td><td>1.33</td><td>α ?, SF ?, β+ ?</td><td></td></tr><tr><td>957</td><td><a href="/facts/Isotopes_of_mendelevium/D4aMzPqW">256Md</a></td><td>101</td><td>155</td><td>7.729062</td><td>4.620×103</td><td>1.28</td><td>β+, α (9.2), SF (<3)</td><td></td></tr><tr><td>958</td><td><a href="/facts/Isotopes_of_praseodymium/8J7u8hCJ">137Pr</a></td><td>59</td><td>78</td><td>8.678459</td><td>4.608×103</td><td>1.28</td><td>β+</td><td></td></tr><tr><td>959</td><td><a href="/facts/Isotopes_of_krypton/8hRKYepJ">87Kr</a></td><td>36</td><td>51</td><td>8.999022</td><td>4.578×103</td><td>1.27</td><td>β−</td><td></td></tr><tr><td>960</td><td><a href="/facts/Isotopes_of_ytterbium/76nIxUvr">164Yb</a></td><td>70</td><td>94</td><td>8.443419</td><td>4.548×103</td><td>1.26</td><td>β+</td><td></td></tr><tr><td>961</td><td><a href="/facts/Isotopes_of_erbium/FH73BFxH">163Er</a></td><td>68</td><td>95</td><td>8.471168</td><td>4.500×103</td><td>1.25</td><td>β+</td><td></td></tr><tr><td>962</td><td><a href="/facts/Isotopes_of_krypton/8hRKYepJ">77Kr</a></td><td>36</td><td>41</td><td>8.982618</td><td>4.464×103</td><td>1.24</td><td>β+</td><td></td></tr><tr><td>963</td><td><a href="/facts/Isotopes_of_ytterbium/76nIxUvr">178Yb</a></td><td>70</td><td>108</td><td>8.350530</td><td>4.440×103</td><td>1.23</td><td>β−</td><td></td></tr><tr><td>964</td><td><a href="/facts/Isotopes_of_americium/aqoWt39B">237Am</a></td><td>95</td><td>142</td><td>7.874830</td><td>4.380×103</td><td>1.22</td><td>β+,α (0.03)</td><td></td></tr><tr><td>965</td><td><a href="/facts/Isotopes_of_samarium/e5wQw5B0">142Sm</a></td><td>62</td><td>80</td><td>8.627616</td><td>4.349×103</td><td>1.21</td><td>β+</td><td></td></tr><tr><td>966</td><td><a href="/facts/Isotopes_of_niobium/nbT6c0vs">97Nb</a></td><td>41</td><td>56</td><td>8.953864</td><td>4.326×103</td><td>1.20</td><td>β−</td><td></td></tr><tr><td>967</td><td><a href="/facts/Isotopes_of_platinum/G5CS1TkP">185Pt</a></td><td>78</td><td>107</td><td>8.269598</td><td>4.254×103</td><td>1.18</td><td>β+</td><td></td></tr><tr><td>968</td><td><a href="/facts/Isotopes_of_thallium/7BEwqp8j">195Tl</a></td><td>81</td><td>114</td><td>8.215712</td><td>4.176×103</td><td>1.16</td><td>β+</td><td></td></tr><tr><td>969</td><td><a href="/facts/Isotopes_of_tellurium/cE0X04xU">129Te</a></td><td>52</td><td>77</td><td></td><td>4.176×103</td><td>1.16</td><td>β−</td><td></td></tr><tr><td>970</td><td><a href="/facts/Isotopes_of_silver/f4jsguS6">104Ag</a></td><td>47</td><td>57</td><td>8.889702</td><td>4.152×103</td><td>1.15</td><td>β+</td><td></td></tr><tr><td>971</td><td><a href="/facts/Isotopes_of_indium/4AVSfBza">110mIn</a></td><td>49</td><td>61</td><td></td><td>4.146×103</td><td>1.15</td><td>β+</td><td></td></tr><tr><td>972</td><td><a href="/facts/Isotopes_of_tantalum/uPRoIMz1">174Ta</a></td><td>73</td><td>101</td><td>8.368684</td><td>4.104×103</td><td>1.14</td><td>β+</td><td></td></tr><tr><td>973</td><td><a href="/facts/Isotopes_of_gallium/Wk0C9DbY">68Ga</a></td><td>31</td><td>37</td><td>9.057888</td><td>4.063×103</td><td>1.13</td><td>β+</td><td>IM</td></tr><tr><td>974</td><td><a href="/facts/Isotopes_of_strontium/ljDHPVaV">85mSr</a></td><td>38</td><td>47</td><td></td><td>4.058×103</td><td>1.13</td><td>IT, β+ (13)</td><td></td></tr><tr><td>975</td><td><a href="/facts/Isotopes_of_iridium/F1zVVPRq">190mIr</a></td><td>77</td><td>113</td><td></td><td>4.032×103</td><td>1.12</td><td>IT</td><td></td></tr><tr><td>976</td><td><a href="/facts/Isotopes_of_holmium/zNJ7HJqT">162mHo</a></td><td>67</td><td>95</td><td>8.478371</td><td>4.020×103</td><td>1.12</td><td>IT, β+ (38)</td><td></td></tr><tr><td>977</td><td><a href="/facts/Isotopes_of_lead/V9JFUTRo">204m2Pb</a></td><td>82</td><td>122</td><td></td><td>4.016×103</td><td>1.12</td><td>IT</td><td></td></tr><tr><td>978</td><td><a href="/facts/Isotopes_of_niobium/nbT6c0vs">89mNb</a></td><td>41</td><td>48</td><td></td><td>3.96×103</td><td>1.10</td><td>β+</td><td></td></tr><tr><td>979</td><td><a href="/facts/Isotopes_of_silver/f4jsguS6">103Ag</a></td><td>47</td><td>56</td><td>8.894541</td><td>3.942×103</td><td>1.10</td><td>β+</td><td></td></tr><tr><td>980</td><td><a href="/facts/Isotopes_of_curium/WnMh6VLE">249Cm</a></td><td>96</td><td>153</td><td>7.787191</td><td>3.849×103</td><td>1.07</td><td>β−</td><td></td></tr><tr><td>981</td><td><a href="/facts/Isotopes_of_hafnium/4sCv7aQ6">183Hf</a></td><td>72</td><td>111</td><td>8.307885</td><td>3.841×103</td><td>1.07</td><td>β−</td><td></td></tr><tr><td>982</td><td><a href="/facts/Isotopes_of_actinium/vnv59EsB">229Ac</a></td><td>89</td><td>140</td><td>7.937048</td><td>3.762×103</td><td>1.05</td><td>β−</td><td></td></tr><tr><td>983</td><td><a href="/facts/Isotopes_of_tellurium/cE0X04xU">117Te</a></td><td>52</td><td>65</td><td>8.798652</td><td>3.720×103</td><td>1.03</td><td>β+</td><td></td></tr><tr><td>984</td><td><a href="/facts/Isotopes_of_neptunium/X3bPWwX1">240Np</a></td><td>93</td><td>147</td><td>7.853348</td><td>3.714×103</td><td>1.03</td><td>β−</td><td>DP</td></tr><tr><td>985</td><td><a href="/facts/Isotopes_of_hafnium/4sCv7aQ6">182mHf</a></td><td>72</td><td>110</td><td></td><td>3.69×103</td><td>1.03</td><td>β−, IT (46)</td><td></td></tr><tr><td>986</td><td><a href="/facts/Isotopes_of_bismuth/DrbTkEzW">212Bi</a></td><td>83</td><td>129</td><td>8.109617</td><td>3.633×103</td><td>1.01</td><td>β−,α (36)</td><td>DP</td></tr><tr><td>987</td><td><a href="/facts/Isotopes_of_antimony/QMxb6D0V">116mSb</a></td><td>51</td><td>65</td><td>8.816483</td><td>3.618×103</td><td>1.01</td><td>β+</td><td></td></tr><tr><td>988</td><td><a href="/facts/Isotopes_of_terbium/W0Wxkne3">148Tb</a></td><td>65</td><td>83</td><td>8.547949</td><td>3.600×103</td><td>1.00</td><td>β+</td><td></td></tr><tr><td>989</td><td><a href="/facts/Isotopes_of_dubnium/Px5qt1qv">270Db</a></td><td>105</td><td>165</td><td></td><td>3.600×103</td><td>1.00</td><td>α, SF, ε?</td><td></td></tr></tbody></table>
<h3>Radionuclides with half-lives less than 1 hour</h3>
The following is incomplete and out of date, but is the only such list we have.

Main article: <a href="/facts/List_of_radioactive_nuclides_by_half-life/4uHRsIU9">List of radioactive nuclides by half-life</a>
<h2 id="see-also">See also</h2>
<ul><li><a href="/facts/Isotope_geochemistry/Pq2IXawb">Isotope geochemistry</a></li>
<li><a href="/facts/List_of_elements_by_stability_of_isotopes/Bm0ogJmR">List of elements by stability of isotopes</a></li>
<li><a href="/facts/List_of_radioactive_nuclides_by_half-life/4uHRsIU9">List of radioactive nuclides by half-life</a></li>
<li><a href="/facts/Monoisotopic_element/WzpKpVfg">Monoisotopic element</a></li>
<li><a href="/facts/Mononuclidic_element/3hmC7IpX">Mononuclidic element</a></li>
<li><a href="/facts/Primordial_nuclide/lFAUqHDv">Primordial nuclide</a></li>
<li><a href="/facts/Radionuclide/5WpCfbdq">Radionuclide</a></li>
<li><a href="/facts/Stable_nuclide/vC0VVvqN">Stable nuclide</a></li>
<li><a href="/facts/Table_of_nuclides/wb9TQwN7">Table of nuclides</a></li></ul>
<h3>Sources</h3>
List was begun from reference <a class="footnote-ref" id="fnref:108" href="#fn:108">108</a> and most more recent updats are reflected in reference<a class="footnote-ref" id="fnref:109" href="#fn:109">109</a>. These sources do not indicate whether some heavy isotopes were produced and observed, or only predicted from estimated data. None of the latter should appear here.

<h2 id="notes">Notes</h2>

<h2 id="external-links">External links</h2>
<ul><li><a href="https://www.nndc.bnl.gov/">National Nuclear Data Center</a>, Brookhaven National Laboratory
<ul><li><a href="http://amdc.impcas.ac.cn/web/masseval.html">The 2016 Atomic Mass Evaluation</a>, AMDC</li></ul></li>
<li><a href="https://www.nucleonica.com/wiki/index.php?title=Karlsruhe_Nuclide_Chart,_9th_Edition">Karlsruhe Nuclide Chart</a>, 9th edition, 2015, Joseph Magill, Gerda Pfennig, Raymond Dreher, Zsolt Sóti</li>
<li><a href="https://isotopes.gov/">National Isotope Development Center</a> Reference information on isotopes, and coordination and management of isotope production, availability, and distribution</li>
<li><a href="https://science.energy.gov/np/research/idpra/">Isotope Development & Production for Research and Applications (IDPRA)</a> U.S. Department of Energy program for isotope production and production research and development
<ul><li><a href="https://www.ornl.gov/group/assi">Accelerator Systems and Stable Isotopes Group</a> at ORNL</li></ul></li>
<li><a href="https://physics.nist.gov/cgi-bin/Compositions/stand_alone.pl">Atomic Weights and Isotopic Compositions for All Elements</a> U.S. National Institute of Standards and Technology</li>
<li><a href="https://web.archive.org/web/20120417202428/http://adavidstubbs.home.comcast.net/~adavidstubbs/Quark/Isotope_table_(compact-energy).htm">Table of nuclides (compact, with energy per baryon)</a> Overview picture for energy of nuclides</li></ul>

<h2 id="references">References</h2>

<ol>
<li id="fn:1">Thoennessen, M. (2 April 2019). "Discovery of Nuclides Project". Retrieved 26 April 2019. <a href="https://people.nscl.msu.edu/~thoennes/isotopes/index.html" target="_blank">https://people.nscl.msu.edu/~thoennes/isotopes/index.html</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></li>
<li id="fn:2">Two further nuclides, plutonium-244 and samarium-146, have half-lives just long enough (8.13×107 and 9.20×107 years[2]) that they could have survived from the formation of the Solar System and be present on Earth in trace quantities (having survived 56 and 50 half-lives). They might therefore be considered primordial, but fall short of the detection threshold in studies so far.[citation needed] <a href="#fnref:2" class="footnote-back-ref">↩</a></li>
<li id="fn:3">Merrill, Paul W. (September 1954). "17. Technetium in S-type stars". Transactions of the International Astronomical Union. 8: 832–833. <a href="https://www.cambridge.org/core/journals/transactions-of-the-international-astronomical-union/article/17-technetium-in-stype-stars/2BF75C2E03D323ED8A47150912DD595C" target="_blank">https://www.cambridge.org/core/journals/transactions-of-the-international-astronomical-union/article/17-technetium-in-stype-stars/2BF75C2E03D323ED8A47150912DD595C</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></li>
<li id="fn:4">primarily sourced from https://world-nuclear.org/information-library/non-power-nuclear-applications/radioisotopes-research/radioisotopes-in-medicine.aspx and https://world-nuclear.org/information-library/non-power-nuclear-applications/radioisotopes-research/radioisotopes-in-industry.aspx accessed 30 June 2016 <a href="https://world-nuclear.org/information-library/non-power-nuclear-applications/radioisotopes-research/radioisotopes-in-medicine.aspx" target="_blank">https://world-nuclear.org/information-library/non-power-nuclear-applications/radioisotopes-research/radioisotopes-in-medicine.aspx</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></li>
<li id="fn:5">Note that NUBASE2020 uses the tropical year to convert between years and other units of time, not the Gregorian year. The relationship between years and other time units in NUBASE2020 is as follows: 1 y = 365.2422 d = 31 556 926 s
 <a href="/wiki/Gregorian_year" target="_blank">/wiki/Gregorian_year</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></li>
<li id="fn:6">Yan, X.; Cheng, Z.; Abdukerim, A.; et al. (2024). "Searching for two-neutrino and neutrinoless double beta decay of 134Xe with the PandaX-4T experiment". Physical Review Letters. 132 (152502): 152502. arXiv:2312.15632. Bibcode:2024PhRvL.132o2502Y. doi:10.1103/PhysRevLett.132.152502. PMID 38682998. <a href="/wiki/ArXiv_(identifier)" target="_blank">/wiki/ArXiv_(identifier)</a> <a href="#fnref:6" class="footnote-back-ref">↩</a></li>
<li id="fn:7">Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
 <a href="https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf" target="_blank">https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf</a> <a href="#fnref:7" class="footnote-back-ref">↩</a></li>
<li id="fn:8">Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
 <a href="https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf" target="_blank">https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf</a> <a href="#fnref:8" class="footnote-back-ref">↩</a></li>
<li id="fn:9">Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
 <a href="https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf" target="_blank">https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf</a> <a href="#fnref:9" class="footnote-back-ref">↩</a></li>
<li id="fn:10">Beeman, J. W.; Bellini, F.; Cardani, L.; Casali, N.; Di Domizio, S.; Fiorini, E.; Gironi, L.; Nagorny, S. S.; Nisi, S.; Orio, F.; Pattavina, L.; Pessina, G.; Piperno, G.; Pirro, S.; Previtali, E.; Rusconi, C.; Tomei, C.; Vignati, M. (2013). "New experimental limits on the α decays of lead isotopes". The European Physical Journal A. 49 (4): 50. arXiv:1212.2422. Bibcode:2013EPJA...49...50B. doi:10.1140/epja/i2013-13050-7. ISSN 1434-6001. <a href="/wiki/ArXiv_(identifier)" target="_blank">/wiki/ArXiv_(identifier)</a> <a href="#fnref:10" class="footnote-back-ref">↩</a></li>
<li id="fn:11">Beeman, J. W.; Bellini, F.; Cardani, L.; Casali, N.; Di Domizio, S.; Fiorini, E.; Gironi, L.; Nagorny, S. S.; Nisi, S.; Orio, F.; Pattavina, L.; Pessina, G.; Piperno, G.; Pirro, S.; Previtali, E.; Rusconi, C.; Tomei, C.; Vignati, M. (2013). "New experimental limits on the α decays of lead isotopes". The European Physical Journal A. 49 (4): 50. arXiv:1212.2422. Bibcode:2013EPJA...49...50B. doi:10.1140/epja/i2013-13050-7. ISSN 1434-6001. <a href="/wiki/ArXiv_(identifier)" target="_blank">/wiki/ArXiv_(identifier)</a> <a href="#fnref:11" class="footnote-back-ref">↩</a></li>
<li id="fn:12">Akerib, D S; et al. (2020-10-01). "Search for two neutrino double electron capture of 124Xe and 126Xe in the full exposure of the LUX detector". Journal of Physics G: Nuclear and Particle Physics. 47 (10): 105105. arXiv:1912.02742. Bibcode:2020JPhG...47j5105A. doi:10.1088/1361-6471/ab9c2d. ISSN 0954-3899. <a href="/wiki/ArXiv_(identifier)" target="_blank">/wiki/ArXiv_(identifier)</a> <a href="#fnref:12" class="footnote-back-ref">↩</a></li>
<li id="fn:13">Beeman, J. W.; Bellini, F.; Cardani, L.; Casali, N.; Di Domizio, S.; Fiorini, E.; Gironi, L.; Nagorny, S. S.; Nisi, S.; Orio, F.; Pattavina, L.; Pessina, G.; Piperno, G.; Pirro, S.; Previtali, E.; Rusconi, C.; Tomei, C.; Vignati, M. (2013). "New experimental limits on the α decays of lead isotopes". The European Physical Journal A. 49 (4): 50. arXiv:1212.2422. Bibcode:2013EPJA...49...50B. doi:10.1140/epja/i2013-13050-7. ISSN 1434-6001. <a href="/wiki/ArXiv_(identifier)" target="_blank">/wiki/ArXiv_(identifier)</a> <a href="#fnref:13" class="footnote-back-ref">↩</a></li>
<li id="fn:14">Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
 <a href="https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf" target="_blank">https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf</a> <a href="#fnref:14" class="footnote-back-ref">↩</a></li>
<li id="fn:15">Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
 <a href="https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf" target="_blank">https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf</a> <a href="#fnref:15" class="footnote-back-ref">↩</a></li>
<li id="fn:16">Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
 <a href="https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf" target="_blank">https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf</a> <a href="#fnref:16" class="footnote-back-ref">↩</a></li>
<li id="fn:17">Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
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<li id="fn:59">Belli, P.; Bernabei, R.; Boiko, R.S.; Cappella, F.; Cerulli, R.; Danevich, F.A.; Incicchitti, A.; Kropivyansky, B.N.; Laubenstein, M.; Poda, D.V.; Polischuk, O.G.; Tretyak, V.I. (2014). "Search for double beta decay of 136Ce and 138Ce with HPGe gamma detector". Nuclear Physics A. 930: 195–208. arXiv:1409.2734. Bibcode:2014NuPhA.930..195B. doi:10.1016/j.nuclphysa.2014.08.072. <a href="/wiki/ArXiv_(identifier)" target="_blank">/wiki/ArXiv_(identifier)</a> <a href="#fnref:59" class="footnote-back-ref">↩</a></li>
<li id="fn:60">Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
 <a href="https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf" target="_blank">https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf</a> <a href="#fnref:60" class="footnote-back-ref">↩</a></li>
<li id="fn:61">A. Alessandrello; et al. (January 2003). "New Limits on Naturally Occurring Electron Capture of 123Te". Physical Review C. 67 (1): 014323. arXiv:hep-ex/0211015. Bibcode:2003PhRvC..67a4323A. doi:10.1103/PhysRevC.67.014323. S2CID 119523039. <a href="/wiki/ArXiv_(identifier)" target="_blank">/wiki/ArXiv_(identifier)</a> <a href="#fnref:61" class="footnote-back-ref">↩</a></li>
<li id="fn:62">Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
 <a href="https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf" target="_blank">https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf</a> <a href="#fnref:62" class="footnote-back-ref">↩</a></li>
<li id="fn:63">Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
 <a href="https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf" target="_blank">https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf</a> <a href="#fnref:63" class="footnote-back-ref">↩</a></li>
<li id="fn:64">Belli, P.; Bernabei, R.; Cappella, F.; Cerulli, R.; Danevich, F.A.; dʼAngelo, S.; Di Vacri, M.L.; Incicchitti, A.; Laubenstein, M.; Nagorny, S.S.; Nisi, S.; Tolmachev, A.V.; Tretyak, V.I.; Yavetskiy, R.P. (2011). "First search for double β decay of dysprosium". Nuclear Physics A. 859 (1): 126–139. arXiv:1103.5359. Bibcode:2011NuPhA.859..126B. doi:10.1016/j.nuclphysa.2011.04.003. <a href="/wiki/ArXiv_(identifier)" target="_blank">/wiki/ArXiv_(identifier)</a> <a href="#fnref:64" class="footnote-back-ref">↩</a></li>
<li id="fn:65">Belli, P.; Bernabei, R.; Cappella, F.; Cerulli, R.; Danevich, F.A.; dʼAngelo, S.; Di Vacri, M.L.; Incicchitti, A.; Laubenstein, M.; Nagorny, S.S.; Nisi, S.; Tolmachev, A.V.; Tretyak, V.I.; Yavetskiy, R.P. (2011). "First search for double β decay of dysprosium". Nuclear Physics A. 859 (1): 126–139. arXiv:1103.5359. Bibcode:2011NuPhA.859..126B. doi:10.1016/j.nuclphysa.2011.04.003. <a href="/wiki/ArXiv_(identifier)" target="_blank">/wiki/ArXiv_(identifier)</a> <a href="#fnref:65" class="footnote-back-ref">↩</a></li>
<li id="fn:66">Belli, P.; Bernabei, R.; Cappella, F.; Caracciolo, V.; Cerulli, R.; Danevich, F. A.; Incicchitti, A.; Kasperovych, D. V.; Kobychev, V. V.; Kovtun, G. P.; Kovtun, N. G.; Laubenstein, M.; Poda, D. V.; Polischuk, O. G.; Shcherban, A. P.; Tessalina, S.; Tretyak, V. I. (2020-08-05). "Search for α decay of naturally occurring osmium nuclides accompanied by γ quanta". Physical Review C. 102 (2): 024605. arXiv:2009.01508. Bibcode:2020PhRvC.102b4605B. doi:10.1103/PhysRevC.102.024605. ISSN 2469-9985. <a href="/wiki/ArXiv_(identifier)" target="_blank">/wiki/ArXiv_(identifier)</a> <a href="#fnref:66" class="footnote-back-ref">↩</a></li>
<li id="fn:67">Belli, P.; Bernabei, R.; Cappella, F.; Caracciolo, V.; Cerulli, R.; Danevich, F. A.; Incicchitti, A.; Kasperovych, D. V.; Kobychev, V. V.; Kovtun, G. P.; Kovtun, N. G.; Laubenstein, M.; Poda, D. V.; Polischuk, O. G.; Shcherban, A. P.; Tessalina, S.; Tretyak, V. I. (2020-08-05). "Search for α decay of naturally occurring osmium nuclides accompanied by γ quanta". Physical Review C. 102 (2): 024605. arXiv:2009.01508. Bibcode:2020PhRvC.102b4605B. doi:10.1103/PhysRevC.102.024605. ISSN 2469-9985. <a href="/wiki/ArXiv_(identifier)" target="_blank">/wiki/ArXiv_(identifier)</a> <a href="#fnref:67" class="footnote-back-ref">↩</a></li>
<li id="fn:68">Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
 <a href="https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf" target="_blank">https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf</a> <a href="#fnref:68" class="footnote-back-ref">↩</a></li>
<li id="fn:69">Belli, P.; Bernabei, R.; Cappella, F.; Cerulli, R.; Danevich, F.A.; dʼAngelo, S.; Di Vacri, M.L.; Incicchitti, A.; Laubenstein, M.; Nagorny, S.S.; Nisi, S.; Tolmachev, A.V.; Tretyak, V.I.; Yavetskiy, R.P. (2011). "First search for double β decay of dysprosium". Nuclear Physics A. 859 (1): 126–139. arXiv:1103.5359. Bibcode:2011NuPhA.859..126B. doi:10.1016/j.nuclphysa.2011.04.003. <a href="/wiki/ArXiv_(identifier)" target="_blank">/wiki/ArXiv_(identifier)</a> <a href="#fnref:69" class="footnote-back-ref">↩</a></li>
<li id="fn:70">Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
 <a href="https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf" target="_blank">https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf</a> <a href="#fnref:70" class="footnote-back-ref">↩</a></li>
<li id="fn:71">Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
 <a href="https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf" target="_blank">https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf</a> <a href="#fnref:71" class="footnote-back-ref">↩</a></li>
<li id="fn:72">Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
 <a href="https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf" target="_blank">https://www-nds.iaea.org/amdc/ame2020/NUBASE2020.pdf</a> <a href="#fnref:72" class="footnote-back-ref">↩</a></li>
<li id="fn:73">Note that NUBASE2020 uses the tropical year to convert between years and other units of time, not the Gregorian year. The relationship between years and other time units in NUBASE2020 is as follows: 1 y = 365.2422 d = 31 556 926 s
 <a href="/wiki/Gregorian_year" target="_blank">/wiki/Gregorian_year</a> <a href="#fnref:73" class="footnote-back-ref">↩</a></li>
<li id="fn:74">Münster, A.; Sivers, M. v.; Angloher, G.; Bento, A.; Bucci, C.; Canonica, L.; Erb, A.; Feilitzsch, F. v.; Gorla, P.; Gütlein, A.; Hauff, D.; Jochum, J.; Kraus, H.; Lanfranchi, J. -C.; Laubenstein, M.; Loebell, J.; Ortigoza, Y.; Petricca, F.; Potzel, W.; Pröbst, F.; Puimedon, J.; Reindl, F.; Roth, S.; Rottler, K.; Sailer, C.; Schäffner, K.; Schieck, J.; Scholl, S.; Schönert, S.; Seidel, W.; Stodolsky, L.; Strandhagen, C.; Strauss, R.; Tanzke, A.; Uffinger, M.; Ulrich, A.; Usherov, I.; Wawoczny, S.; Willers, M.; Wüstrich, M.; Zöller, A. (May 2014). "Radiopurity of CaWO4 crystals for direct dark matter search with CRESST and EURECA". Journal of Cosmology and Astroparticle Physics (5): 018. arXiv:1403.5114. Bibcode:2014JCAP...05..018M. doi:10.1088/1475-7516/2014/05/018. 018. <a href="/wiki/ArXiv_(identifier)" target="_blank">/wiki/ArXiv_(identifier)</a> <a href="#fnref:74" class="footnote-back-ref">↩</a></li>
<li id="fn:75">Also theoretically capable of β− decay <a href="#fnref:75" class="footnote-back-ref">↩</a></li>
<li id="fn:76">Belli, P.; Bernabei, R.; Cappella, F.; Caracciolo, V.; Cerulli, R.; Incicchitti, A.; Laubenstein, M.; Leoncini, A.; Merlo, V.; Nagorny, S.S.; Nahorna, V.V.; Nisi, S.; Wang, P. (January 2025). "A new measurement of 174Hf alpha decay". Nuclear Physics A. 1053: 122976. doi:10.1016/j.nuclphysa.2024.122976. <a href="/wiki/Doi_(identifier)" target="_blank">/wiki/Doi_(identifier)</a> <a href="#fnref:76" class="footnote-back-ref">↩</a></li>
<li id="fn:77">Theoretically capable of electron capture[25] <a href="#fnref:77" class="footnote-back-ref">↩</a></li>
<li id="fn:78">Davis, Andrew M. (2022). "Short-Lived Nuclides in the Early Solar System: Abundances, Origins, and Applications". Annual Review of Nuclear and Particle Science. 72: 339–363. Bibcode:2022ARNPS..72..339D. doi:10.1146/annurev-nucl-010722-074615. <a href="https://doi.org/10.1146%2Fannurev-nucl-010722-074615" target="_blank">https://doi.org/10.1146%2Fannurev-nucl-010722-074615</a> <a href="#fnref:78" class="footnote-back-ref">↩</a></li>
<li id="fn:79">Note that NUBASE2020 uses the tropical year to convert between years and other units of time, not the Gregorian year. The relationship between years and other time units in NUBASE2020 is as follows: 1 y = 365.2422 d = 31 556 926 s
 <a href="/wiki/Gregorian_year" target="_blank">/wiki/Gregorian_year</a> <a href="#fnref:79" class="footnote-back-ref">↩</a></li>
<li id="fn:80">Chiera, Nadine M.; Sprung, Peter; Amelin, Yuri; Dressler, Rugard; Schumann, Dorothea; Talip, Zeynep (1 August 2024). "The 146Sm half-life re-measured: consolidating the chronometer for events in the early Solar System". Scientific Reports. 14 (1): 17436. doi:10.1038/s41598-024-64104-6. PMC 11294585. PMID 39090187. <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11294585" target="_blank">https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11294585</a> <a href="#fnref:80" class="footnote-back-ref">↩</a></li>
<li id="fn:81">Davis, Andrew M. (2022). "Short-Lived Nuclides in the Early Solar System: Abundances, Origins, and Applications". Annual Review of Nuclear and Particle Science. 72: 339–363. Bibcode:2022ARNPS..72..339D. doi:10.1146/annurev-nucl-010722-074615. <a href="https://doi.org/10.1146%2Fannurev-nucl-010722-074615" target="_blank">https://doi.org/10.1146%2Fannurev-nucl-010722-074615</a> <a href="#fnref:81" class="footnote-back-ref">↩</a></li>
<li id="fn:82">Wallner, A.; Faestermann, T.; Feige, J.; Feldstein, C.; Knie, K.; Korschinek, G.; Kutschera, W.; Ofan, A.; Paul, M.; Quinto, F.; Rugel, G.; Steier, P. (2015). "Abundance of live 244Pu in deep-sea reservoirs on Earth points to rarity of actinide nucleosynthesis". Nature Communications. 6: 5956. arXiv:1509.08054. Bibcode:2015NatCo...6.5956W. doi:10.1038/ncomms6956. ISSN 2041-1723. PMC 4309418. PMID 25601158. <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4309418" target="_blank">https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4309418</a> <a href="#fnref:82" class="footnote-back-ref">↩</a></li>
<li id="fn:83">Davis, Andrew M. (2022). "Short-Lived Nuclides in the Early Solar System: Abundances, Origins, and Applications". Annual Review of Nuclear and Particle Science. 72: 339–363. Bibcode:2022ARNPS..72..339D. doi:10.1146/annurev-nucl-010722-074615. <a href="https://doi.org/10.1146%2Fannurev-nucl-010722-074615" target="_blank">https://doi.org/10.1146%2Fannurev-nucl-010722-074615</a> <a href="#fnref:83" class="footnote-back-ref">↩</a></li>
<li id="fn:84">Clayton, Donald D.; Morgan, John A. (1977). "Muon production of 92,94Nb in the Earth's crust". Nature. 266 (5604): 712–713. doi:10.1038/266712a0. S2CID 4292459. <a href="/wiki/Doi_(identifier)" target="_blank">/wiki/Doi_(identifier)</a> <a href="#fnref:84" class="footnote-back-ref">↩</a></li>
<li id="fn:85">Davis, Andrew M. (2022). "Short-Lived Nuclides in the Early Solar System: Abundances, Origins, and Applications". Annual Review of Nuclear and Particle Science. 72: 339–363. Bibcode:2022ARNPS..72..339D. doi:10.1146/annurev-nucl-010722-074615. <a href="https://doi.org/10.1146%2Fannurev-nucl-010722-074615" target="_blank">https://doi.org/10.1146%2Fannurev-nucl-010722-074615</a> <a href="#fnref:85" class="footnote-back-ref">↩</a></li>
<li id="fn:86">Davis, Andrew M. (2022). "Short-Lived Nuclides in the Early Solar System: Abundances, Origins, and Applications". Annual Review of Nuclear and Particle Science. 72: 339–363. Bibcode:2022ARNPS..72..339D. doi:10.1146/annurev-nucl-010722-074615. <a href="https://doi.org/10.1146%2Fannurev-nucl-010722-074615" target="_blank">https://doi.org/10.1146%2Fannurev-nucl-010722-074615</a> <a href="#fnref:86" class="footnote-back-ref">↩</a></li>
<li id="fn:87">Davis, Andrew M. (2022). "Short-Lived Nuclides in the Early Solar System: Abundances, Origins, and Applications". Annual Review of Nuclear and Particle Science. 72: 339–363. Bibcode:2022ARNPS..72..339D. doi:10.1146/annurev-nucl-010722-074615. <a href="https://doi.org/10.1146%2Fannurev-nucl-010722-074615" target="_blank">https://doi.org/10.1146%2Fannurev-nucl-010722-074615</a> <a href="#fnref:87" class="footnote-back-ref">↩</a></li>
<li id="fn:88">Davis, Andrew M. (2022). "Short-Lived Nuclides in the Early Solar System: Abundances, Origins, and Applications". Annual Review of Nuclear and Particle Science. 72: 339–363. Bibcode:2022ARNPS..72..339D. doi:10.1146/annurev-nucl-010722-074615. <a href="https://doi.org/10.1146%2Fannurev-nucl-010722-074615" target="_blank">https://doi.org/10.1146%2Fannurev-nucl-010722-074615</a> <a href="#fnref:88" class="footnote-back-ref">↩</a></li>
<li id="fn:89">Davis, Andrew M. (2022). "Short-Lived Nuclides in the Early Solar System: Abundances, Origins, and Applications". Annual Review of Nuclear and Particle Science. 72: 339–363. Bibcode:2022ARNPS..72..339D. doi:10.1146/annurev-nucl-010722-074615. <a href="https://doi.org/10.1146%2Fannurev-nucl-010722-074615" target="_blank">https://doi.org/10.1146%2Fannurev-nucl-010722-074615</a> <a href="#fnref:89" class="footnote-back-ref">↩</a></li>
<li id="fn:90">Davis, Andrew M. (2022). "Short-Lived Nuclides in the Early Solar System: Abundances, Origins, and Applications". Annual Review of Nuclear and Particle Science. 72: 339–363. Bibcode:2022ARNPS..72..339D. doi:10.1146/annurev-nucl-010722-074615. <a href="https://doi.org/10.1146%2Fannurev-nucl-010722-074615" target="_blank">https://doi.org/10.1146%2Fannurev-nucl-010722-074615</a> <a href="#fnref:90" class="footnote-back-ref">↩</a></li>
<li id="fn:91">Davis, Andrew M. (2022). "Short-Lived Nuclides in the Early Solar System: Abundances, Origins, and Applications". Annual Review of Nuclear and Particle Science. 72: 339–363. Bibcode:2022ARNPS..72..339D. doi:10.1146/annurev-nucl-010722-074615. <a href="https://doi.org/10.1146%2Fannurev-nucl-010722-074615" target="_blank">https://doi.org/10.1146%2Fannurev-nucl-010722-074615</a> <a href="#fnref:91" class="footnote-back-ref">↩</a></li>
<li id="fn:92">Cosmogenic Iron-60 In Iron Meteorites: Measurements By Low-Level Counting. <a href="https://www.lpi.usra.edu/meetings/metsoc2007/pdf/5281.pdf" target="_blank">https://www.lpi.usra.edu/meetings/metsoc2007/pdf/5281.pdf</a> <a href="#fnref:92" class="footnote-back-ref">↩</a></li>
<li id="fn:93">Interstellar 60Fe detected on Earth - but where is the r-process nuclide 244Pu? <a href="https://www.hzdr.de/publications/Publ-25521" target="_blank">https://www.hzdr.de/publications/Publ-25521</a> <a href="#fnref:93" class="footnote-back-ref">↩</a></li>
<li id="fn:94">Davis, Andrew M. (2022). "Short-Lived Nuclides in the Early Solar System: Abundances, Origins, and Applications". Annual Review of Nuclear and Particle Science. 72: 339–363. Bibcode:2022ARNPS..72..339D. doi:10.1146/annurev-nucl-010722-074615. <a href="https://doi.org/10.1146%2Fannurev-nucl-010722-074615" target="_blank">https://doi.org/10.1146%2Fannurev-nucl-010722-074615</a> <a href="#fnref:94" class="footnote-back-ref">↩</a></li>
<li id="fn:95">Chiera, Nadine Mariel; Dressler, Rugard; Sprung, Peter; Talip, Zeynep; Schumann, Dorothea (2022-05-28). "High precision half-life measurement of the extinct radio-lanthanide Dysprosium-154". Scientific Reports. 12 (1). Springer Science and Business Media LLC: 8988. Bibcode:2022NatSR..12.8988C. doi:10.1038/s41598-022-12684-6. ISSN 2045-2322. PMC 9148308. PMID 35643721. <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9148308" target="_blank">https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9148308</a> <a href="#fnref:95" class="footnote-back-ref">↩</a></li>
<li id="fn:96">Davis, Andrew M. (2022). "Short-Lived Nuclides in the Early Solar System: Abundances, Origins, and Applications". Annual Review of Nuclear and Particle Science. 72: 339–363. Bibcode:2022ARNPS..72..339D. doi:10.1146/annurev-nucl-010722-074615. <a href="https://doi.org/10.1146%2Fannurev-nucl-010722-074615" target="_blank">https://doi.org/10.1146%2Fannurev-nucl-010722-074615</a> <a href="#fnref:96" class="footnote-back-ref">↩</a></li>
<li id="fn:97">Davis, Andrew M. (2022). "Short-Lived Nuclides in the Early Solar System: Abundances, Origins, and Applications". Annual Review of Nuclear and Particle Science. 72: 339–363. Bibcode:2022ARNPS..72..339D. doi:10.1146/annurev-nucl-010722-074615. <a href="https://doi.org/10.1146%2Fannurev-nucl-010722-074615" target="_blank">https://doi.org/10.1146%2Fannurev-nucl-010722-074615</a> <a href="#fnref:97" class="footnote-back-ref">↩</a></li>
<li id="fn:98">Davis, Andrew M. (2022). "Short-Lived Nuclides in the Early Solar System: Abundances, Origins, and Applications". Annual Review of Nuclear and Particle Science. 72: 339–363. Bibcode:2022ARNPS..72..339D. doi:10.1146/annurev-nucl-010722-074615. <a href="https://doi.org/10.1146%2Fannurev-nucl-010722-074615" target="_blank">https://doi.org/10.1146%2Fannurev-nucl-010722-074615</a> <a href="#fnref:98" class="footnote-back-ref">↩</a></li>
<li id="fn:99">Clayton, Donald D.; Morgan, John A. (1977). "Muon production of 92,94Nb in the Earth's crust". Nature. 266 (5604): 712–713. doi:10.1038/266712a0. S2CID 4292459. <a href="/wiki/Doi_(identifier)" target="_blank">/wiki/Doi_(identifier)</a> <a href="#fnref:99" class="footnote-back-ref">↩</a></li>
<li id="fn:100">Note that NUBASE2020 uses the tropical year to convert between years and other units of time, not the Gregorian year. The relationship between years and other time units in NUBASE2020 is as follows: 1 y = 365.2422 d = 31 556 926 s
 <a href="/wiki/Gregorian_year" target="_blank">/wiki/Gregorian_year</a> <a href="#fnref:100" class="footnote-back-ref">↩</a></li>
<li id="fn:101">Kajan, I.; Heinitz, S.; Kossert, K.; Sprung, P.; Dressler, R.; Schumann, D. (2021-10-05). "First direct determination of the 93Mo half-life". Scientific Reports. 11 (1): 19788. Bibcode:2021NatSR..1119788K. doi:10.1038/s41598-021-99253-5. ISSN 2045-2322. PMC 8492754. PMID 34611245. <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8492754" target="_blank">https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8492754</a> <a href="#fnref:101" class="footnote-back-ref">↩</a></li>
<li id="fn:102">Chiera, Nadine M.; Dressler, Rugard; Sprung, Peter; Talip, Zeynep; Schumann, Dorothea (2023). "Determination of the half-life of gadolinium-148". Applied Radiation and Isotopes. 194. Elsevier BV: 110708. Bibcode:2023AppRI.19410708C. doi:10.1016/j.apradiso.2023.110708. ISSN 0969-8043. PMID 36731388. <a href="https://doi.org/10.1016%2Fj.apradiso.2023.110708" target="_blank">https://doi.org/10.1016%2Fj.apradiso.2023.110708</a> <a href="#fnref:102" class="footnote-back-ref">↩</a></li>
<li id="fn:103">Note that NUBASE2020 uses the tropical year to convert between years and other units of time, not the Gregorian year. The relationship between years and other time units in NUBASE2020 is as follows: 1 y = 365.2422 d = 31 556 926 s
 <a href="/wiki/Gregorian_year" target="_blank">/wiki/Gregorian_year</a> <a href="#fnref:103" class="footnote-back-ref">↩</a></li>
<li id="fn:104">Note that NUBASE2020 uses the tropical year to convert between years and other units of time, not the Gregorian year. The relationship between years and other time units in NUBASE2020 is as follows: 1 y = 365.2422 d = 31 556 926 s
 <a href="/wiki/Gregorian_year" target="_blank">/wiki/Gregorian_year</a> <a href="#fnref:104" class="footnote-back-ref">↩</a></li>
<li id="fn:105">Liang, C. F.; Paris, P.; Sheline, R. K. (2000-09-19). "α decay of 225Ra". Physical Review C. 62 (4). American Physical Society (APS): 047303. Bibcode:2000PhRvC..62d7303L. doi:10.1103/physrevc.62.047303. ISSN 0556-2813. <a href="/wiki/Bibcode_(identifier)" target="_blank">/wiki/Bibcode_(identifier)</a> <a href="#fnref:105" class="footnote-back-ref">↩</a></li>
<li id="fn:106">"SHE Factory first experiment – FLEROV LABORATORY of NUCLEAR REACTIONS". <a href="http://flerovlab.jinr.ru/she-factory-first-experiment/" target="_blank">http://flerovlab.jinr.ru/she-factory-first-experiment/</a> <a href="#fnref:106" class="footnote-back-ref">↩</a></li>
<li id="fn:107">"SHE Factory first experiment – FLEROV LABORATORY of NUCLEAR REACTIONS". <a href="http://flerovlab.jinr.ru/she-factory-first-experiment/" target="_blank">http://flerovlab.jinr.ru/she-factory-first-experiment/</a> <a href="#fnref:107" class="footnote-back-ref">↩</a></li>
<li id="fn:108">Jagdish K. Tuli, Nuclear Wallet Cards, 7th edition, April 2005, Brookhaven National Laboratory, US National Nuclear Data Center <a href="#fnref:108" class="footnote-back-ref">↩</a></li>
<li id="fn:109">Interactive chart of nuclides (Brookhaven National Laboratory) <a href="https://www.nndc.bnl.gov/nudat2/" target="_blank">https://www.nndc.bnl.gov/nudat2/</a> <a href="#fnref:109" class="footnote-back-ref">↩</a></li>
</ol>

List of nuclides open-in-new

List of nuclides