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Isotopes of strontium
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<h2 id="list-of-isotopes">List of isotopes</h2> <table><tbody><tr><th rowspan="2">Nuclide<a class="footnote-ref" id="fnref:5" href="#fn:5"><sup>5</sup></a></th><th rowspan="1"><a href="/facts/Atomic_number/bgAr581S"><i>Z</i></a></th><th rowspan="1"><a href="/facts/Neutron_number/eNtwGnVL"><i>N</i></a></th><th rowspan="1"><a href="/facts/Atomic_mass/J1FJY9MV">Isotopic mass</a> (<a href="/facts/Dalton_(unit)/IMATU3vf">Da</a>)<a class="footnote-ref" id="fnref:6" href="#fn:6"><sup>6</sup></a><a class="footnote-ref" id="fnref:7" href="#fn:7"><sup>7</sup></a><a class="footnote-ref" id="fnref:8" href="#fn:8"><sup>8</sup></a></th><th rowspan="2"><a href="/facts/Half-life/kGVH8BAB">Half-life</a><a class="footnote-ref" id="fnref:9" href="#fn:9"><sup>9</sup></a><a class="footnote-ref" id="fnref:10" href="#fn:10"><sup>10</sup></a></th><th rowspan="2"><a href="/facts/Decay_mode/Ya6FVjt4">Decaymode</a><a class="footnote-ref" id="fnref:11" href="#fn:11"><sup>11</sup></a><a class="footnote-ref" id="fnref:12" href="#fn:12"><sup>12</sup></a></th><th rowspan="2"><a href="/facts/Decay_product/hT0obfLv">Daughterisotope</a><a class="footnote-ref" id="fnref:13" href="#fn:13"><sup>13</sup></a><a class="footnote-ref" id="fnref:14" href="#fn:14"><sup>14</sup></a></th><th rowspan="2"><a href="/facts/Spin_(particle_physics)/4Jvp7e8P">Spin</a> and<a href="/facts/Parity_(physics)/emSbJ4hD">parity</a><a class="footnote-ref" id="fnref:15" href="#fn:15"><sup>15</sup></a><a class="footnote-ref" id="fnref:16" href="#fn:16"><sup>16</sup></a><a class="footnote-ref" id="fnref:17" href="#fn:17"><sup>17</sup></a></th><th colspan="2"><a href="/facts/Natural_abundance/dGjaAwc9">Natural abundance</a> (mole fraction)</th></tr><tr><th colspan="3">Excitation energy</th><th>Normal proportion<a class="footnote-ref" id="fnref:18" href="#fn:18"><sup>18</sup></a></th><th>Range of variation</th></tr><tr><td rowspan="2">73Sr</td><td rowspan="2">38</td><td rowspan="2">35</td><td rowspan="2">72.96570(43)#</td><td rowspan="2">25.3(14) ms</td><td><a href="/facts/Beta_decay/vxTBlckp">β+</a>, <a href="/facts/Proton_emission/9zxVkBkp">p</a> (63%)</td><td>72Kr</td><td rowspan="2">(5/2−)</td><td rowspan="2"></td><td rowspan="2"></td></tr><tr><td>β+ (37%)</td><td>73Rb</td></tr><tr><td>74Sr</td><td>38</td><td>36</td><td>73.95617(11)#</td><td>27.6(26) ms</td><td>β+</td><td>74Rb</td><td>0+</td><td></td><td></td></tr><tr><td rowspan="2">75Sr</td><td rowspan="2">38</td><td rowspan="2">37</td><td rowspan="2">74.94995(24)</td><td rowspan="2">85.2(23) ms</td><td>β+ (94.8%)</td><td>75Rb</td><td rowspan="2">(3/2−)</td><td rowspan="2"></td><td rowspan="2"></td></tr><tr><td>β+, p (5.2%)</td><td>74Kr</td></tr><tr><td rowspan="2">76Sr</td><td rowspan="2">38</td><td rowspan="2">38</td><td rowspan="2">75.941763(37)</td><td rowspan="2">7.89(7) s</td><td>β+</td><td>76Rb</td><td rowspan="2">0+</td><td rowspan="2"></td><td rowspan="2"></td></tr><tr><td>β+, p (0.0034%)</td><td>75Kr</td></tr><tr><td rowspan="2">77Sr</td><td rowspan="2">38</td><td rowspan="2">39</td><td rowspan="2">76.9379455(85)</td><td rowspan="2">9.0(2) s</td><td>β+ (99.92%)</td><td>77Rb</td><td rowspan="2">5/2+</td><td rowspan="2"></td><td rowspan="2"></td></tr><tr><td>β+, p (0.08%)</td><td>76Kr</td></tr><tr><td>78Sr</td><td>38</td><td>40</td><td>77.9321800(80)</td><td>156.1(27) s</td><td>β+</td><td>78Rb</td><td>0+</td><td></td><td></td></tr><tr><td>79Sr</td><td>38</td><td>41</td><td>78.9297047(80)</td><td>2.25(10) min</td><td>β+</td><td>79Rb</td><td>3/2−</td><td></td><td></td></tr><tr><td>80Sr</td><td>38</td><td>42</td><td>79.9245175(37)</td><td>106.3(15) min</td><td>β+</td><td>80Rb</td><td>0+</td><td></td><td></td></tr><tr><td>81Sr</td><td>38</td><td>43</td><td>80.9232114(34)</td><td>22.3(4) min</td><td>β+</td><td>81Rb</td><td>1/2−</td><td></td><td></td></tr><tr><td>81m1Sr</td><td colspan="3">79.23(4) keV</td><td>390(50) ns</td><td><a href="/facts/Isomeric_transition/L8DHcqnk">IT</a></td><td>81Sr</td><td>(5/2)−</td><td></td><td></td></tr><tr><td>81m2Sr</td><td colspan="3">89.05(7) keV</td><td>6.4(5) μs</td><td></td><td></td><td>(7/2+)</td><td></td><td></td></tr><tr><td>82Sr</td><td>38</td><td>44</td><td>81.9183998(64)</td><td>25.35(3) d</td><td><a href="/facts/Electron_capture/EIccoV1u">EC</a></td><td>82Rb</td><td>0+</td><td></td><td></td></tr><tr><td>83Sr</td><td>38</td><td>45</td><td>82.9175544(73)</td><td>32.41(3) h</td><td>β+</td><td>83Rb</td><td>7/2+</td><td></td><td></td></tr><tr><td>83mSr</td><td colspan="3">259.15(9) keV</td><td>4.95(12) s</td><td>IT</td><td>83Sr</td><td>1/2−</td><td></td><td></td></tr><tr><td>84Sr</td><td>38</td><td>46</td><td>83.9134191(13)</td><td colspan="3"><a href="/facts/Observationally_Stable/vC0VVvqN">Observationally Stable</a><a class="footnote-ref" id="fnref:19" href="#fn:19"><sup>19</sup></a></td><td>0+</td><td>0.0056(2)</td><td></td></tr><tr><td>85Sr</td><td>38</td><td>47</td><td>84.9129320(30)</td><td>64.846(6) d</td><td>EC</td><td>85Rb</td><td>9/2+</td><td></td><td></td></tr><tr><td rowspan="2">85mSr</td><td rowspan="2" colspan="3">238.79(5) keV</td><td rowspan="2">67.63(4) min</td><td>IT (86.6%)</td><td>85Sr</td><td rowspan="2">1/2−</td><td rowspan="2"></td><td rowspan="2"></td></tr><tr><td>β+ (13.4%)</td><td>85Rb</td></tr><tr><td>86Sr</td><td>38</td><td>48</td><td>85.9092607247(56)</td><td colspan="3">Stable</td><td>0+</td><td>0.0986(20)</td><td></td></tr><tr><td>86mSr</td><td colspan="3">2956.09(12) keV</td><td>455(7) ns</td><td>IT</td><td>86Sr</td><td>8+</td><td></td><td></td></tr><tr><td>87Sr<a class="footnote-ref" id="fnref:20" href="#fn:20"><sup>20</sup></a></td><td>38</td><td>49</td><td>86.9088774945(55)</td><td colspan="3">Stable</td><td>9/2+</td><td>0.0700(20)</td><td></td></tr><tr><td rowspan="2">87mSr</td><td rowspan="2" colspan="3">388.5287(23) keV</td><td rowspan="2">2.805(9) h</td><td>IT (99.70%)</td><td>87Sr</td><td rowspan="2">1/2−</td><td rowspan="2"></td><td rowspan="2"></td></tr><tr><td>EC (0.30%)</td><td><i>87Rb</i></td></tr><tr><td>88Sr<a class="footnote-ref" id="fnref:21" href="#fn:21"><sup>21</sup></a></td><td>38</td><td>50</td><td>87.905612253(6)</td><td colspan="3">Stable</td><td>0+</td><td>0.8258(35)</td><td></td></tr><tr><td><a href="/facts/Strontium-89/KwbRtFEx">89Sr</a><a class="footnote-ref" id="fnref:22" href="#fn:22"><sup>22</sup></a></td><td>38</td><td>51</td><td>88.907450808(98)</td><td>50.563(25) d</td><td>β−</td><td>89Y</td><td>5/2+</td><td></td><td></td></tr><tr><td><a href="/facts/Strontium-90/VJNoC5eR">90Sr</a><a class="footnote-ref" id="fnref:23" href="#fn:23"><sup>23</sup></a></td><td>38</td><td>52</td><td>89.9077279(16)</td><td>28.91(3) y</td><td>β−</td><td>90Y</td><td>0+</td><td></td><td></td></tr><tr><td>91Sr</td><td>38</td><td>53</td><td>90.9101959(59)</td><td>9.65(6) h</td><td>β−</td><td>91Y</td><td>5/2+</td><td></td><td></td></tr><tr><td>92Sr</td><td>38</td><td>54</td><td>91.9110382(37)</td><td>2.611(17) h</td><td>β−</td><td>92Y</td><td>0+</td><td></td><td></td></tr><tr><td>93Sr</td><td>38</td><td>55</td><td>92.9140243(81)</td><td>7.43(3) min</td><td>β−</td><td>93Y</td><td>5/2+</td><td></td><td></td></tr><tr><td>94Sr</td><td>38</td><td>56</td><td>93.9153556(18)</td><td>75.3(2) s</td><td>β−</td><td>94Y</td><td>0+</td><td></td><td></td></tr><tr><td>95Sr</td><td>38</td><td>57</td><td>94.9193583(62)</td><td>23.90(14) s</td><td>β−</td><td>95Y</td><td>1/2+</td><td></td><td></td></tr><tr><td>96Sr</td><td>38</td><td>58</td><td>95.9217190(91)</td><td>1.059(8) s</td><td>β−</td><td>96Y</td><td>0+</td><td></td><td></td></tr><tr><td rowspan="2">97Sr</td><td rowspan="2">38</td><td rowspan="2">59</td><td rowspan="2">96.9263756(36)</td><td rowspan="2">432(4) ms</td><td>β− (99.98%)</td><td>97Y</td><td rowspan="2">1/2+</td><td rowspan="2"></td><td rowspan="2"></td></tr><tr><td>β−, <a href="/facts/Neutron_emission/lXLQRDCQ">n</a> (0.02%)</td><td>96Y</td></tr><tr><td>97m1Sr</td><td colspan="3">308.13(11) keV</td><td>175.2(21) ns</td><td>IT</td><td>97Sr</td><td>7/2+</td><td></td><td></td></tr><tr><td>97m2Sr</td><td colspan="3">830.83(23) keV</td><td>513(5) ns</td><td>IT</td><td>97Sr</td><td>(9/2+)</td><td></td><td></td></tr><tr><td rowspan="2">98Sr</td><td rowspan="2">38</td><td rowspan="2">60</td><td rowspan="2">97.9286926(35)</td><td rowspan="2">653(2) ms</td><td>β− (99.77%)</td><td>98Y</td><td rowspan="2">0+</td><td rowspan="2"></td><td rowspan="2"></td></tr><tr><td>β−, n (0.23%)</td><td>97Y</td></tr><tr><td rowspan="2">99Sr</td><td rowspan="2">38</td><td rowspan="2">61</td><td rowspan="2">98.9328836(51)</td><td rowspan="2">269.2(10) ms</td><td>β− (99.90%)</td><td>99Y</td><td rowspan="2">3/2+</td><td rowspan="2"></td><td rowspan="2"></td></tr><tr><td>β−, n (0.100%)</td><td>98Y</td></tr><tr><td rowspan="2">100Sr</td><td rowspan="2">38</td><td rowspan="2">62</td><td rowspan="2">99.9357833(74)</td><td rowspan="2">202.1(17) ms</td><td>β− (98.89%)</td><td>100Y</td><td rowspan="2">0+</td><td rowspan="2"></td><td rowspan="2"></td></tr><tr><td>β−, n (1.11%)</td><td>99Y</td></tr><tr><td>100mSr</td><td colspan="3">1618.72(20) keV</td><td>122(9) ns</td><td>IT</td><td>100Sr</td><td>(4−)</td><td></td><td></td></tr><tr><td rowspan="2">101Sr</td><td rowspan="2">38</td><td rowspan="2">63</td><td rowspan="2">100.9406063(91)</td><td rowspan="2">113.7(17) ms</td><td>β− (97.25%)</td><td>101Y</td><td rowspan="2">(5/2−)</td><td rowspan="2"></td><td rowspan="2"></td></tr><tr><td>β−, n (2.75%)</td><td>100Y</td></tr><tr><td rowspan="2">102Sr</td><td rowspan="2">38</td><td rowspan="2">64</td><td rowspan="2">101.944005(72)</td><td rowspan="2">69(6) ms</td><td>β− (94.5%)</td><td>102Y</td><td rowspan="2">0+</td><td rowspan="2"></td><td rowspan="2"></td></tr><tr><td>β−, n (5.5%)</td><td>101Y</td></tr><tr><td>103Sr</td><td>38</td><td>65</td><td>102.94924(22)#</td><td>53(10) ms</td><td>β−</td><td>103Y</td><td>5/2+#</td><td></td><td></td></tr><tr><td>104Sr</td><td>38</td><td>66</td><td>103.95302(32)#</td><td>50.6(42) ms</td><td>β−</td><td>104Y</td><td>0+</td><td></td><td></td></tr><tr><td>105Sr</td><td>38</td><td>67</td><td>104.95900(54)#</td><td>39(5) ms</td><td>β−</td><td>105Y</td><td>5/2+#</td><td></td><td></td></tr><tr><td>106Sr</td><td>38</td><td>68</td><td>105.96318(64)#</td><td>21(8) ms</td><td>β−</td><td>106Y</td><td>0+</td><td></td><td></td></tr><tr><td>107Sr</td><td>38</td><td>69</td><td>106.96967(75)#</td><td>25# ms[>400 ns]</td><td></td><td></td><td>1/2+#</td><td></td><td></td></tr><tr><td>108Sr<a class="footnote-ref" id="fnref:24" href="#fn:24"><sup>24</sup></a></td><td>38</td><td>70</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><th colspan="20"><i>This table header & footer:</i> <ul><li>view</li></ul></th></tr></tbody></table> <ul><li>Isotope masses from: <ul><li>Audi, Georges; Bersillon, Olivier; Blachot, Jean; <a href="/facts/Aaldert_Wapstra/9Ylvt18s">Wapstra, Aaldert Hendrik</a> (2003), <a href="https://hal.archives-ouvertes.fr/in2p3-00020241/document">"The NUBASE evaluation of nuclear and decay properties"</a>, <i>Nuclear Physics A</i>, 729: 3–128, <a href="/facts/Bibcode_(identifier)/9HtdQSGB">Bibcode</a>:<a href="https://ui.adsabs.harvard.edu/abs/2003NuPhA.729....3A">2003NuPhA.729....3A</a>, <a href="/facts/Doi_(identifier)/muM9Etpq">doi</a>:<a href="https://doi.org/10.1016%2Fj.nuclphysa.2003.11.001">10.1016/j.nuclphysa.2003.11.001</a></li></ul></li> <li>Isotopic compositions and standard atomic masses from: <ul><li><a href="/facts/John_Robert_de_Laeter/jYQj55GI">de Laeter, John Robert</a>; Böhlke, John Karl; De Bièvre, Paul; Hidaka, Hiroshi; Peiser, H. Steffen; Rosman, Kevin J. R.; Taylor, Philip D. P. (2003). <a href="https://doi.org/10.1351%2Fpac200375060683">"Atomic weights of the elements. Review 2000 (IUPAC Technical Report)"</a>. <i><a href="/facts/Pure_and_Applied_Chemistry/9QdCDKxf">Pure and Applied Chemistry</a></i>. 75 (6): 683–800. <a href="/facts/Doi_(identifier)/muM9Etpq">doi</a>:<a href="https://doi.org/10.1351%2Fpac200375060683">10.1351/pac200375060683</a>.</li> <li>Wieser, Michael E. (2006). <a href="https://doi.org/10.1351%2Fpac200678112051">"Atomic weights of the elements 2005 (IUPAC Technical Report)"</a>. <i><a href="/facts/Pure_and_Applied_Chemistry/9QdCDKxf">Pure and Applied Chemistry</a></i>. 78 (11): 2051–2066. <a href="/facts/Doi_(identifier)/muM9Etpq">doi</a>:<a href="https://doi.org/10.1351%2Fpac200678112051">10.1351/pac200678112051</a>.</li></ul></li> <li><a href="http://old.iupac.org/news/archives/2005/atomic-weights_revised05.html">"News & Notices: Standard Atomic Weights Revised"</a>. <i>International Union of Pure and Applied Chemistry</i>. 19 October 2005.</li> <li>Half-life, spin, and isomer data selected from the following sources. <ul><li>Audi, Georges; Bersillon, Olivier; Blachot, Jean; <a href="/facts/Aaldert_Wapstra/9Ylvt18s">Wapstra, Aaldert Hendrik</a> (2003), <a href="https://hal.archives-ouvertes.fr/in2p3-00020241/document">"The NUBASE evaluation of nuclear and decay properties"</a>, <i>Nuclear Physics A</i>, 729: 3–128, <a href="/facts/Bibcode_(identifier)/9HtdQSGB">Bibcode</a>:<a href="https://ui.adsabs.harvard.edu/abs/2003NuPhA.729....3A">2003NuPhA.729....3A</a>, <a href="/facts/Doi_(identifier)/muM9Etpq">doi</a>:<a href="https://doi.org/10.1016%2Fj.nuclphysa.2003.11.001">10.1016/j.nuclphysa.2003.11.001</a></li> <li><a href="/facts/National_Nuclear_Data_Center/SgVzvxLk">National Nuclear Data Center</a>. <a href="http://www.nndc.bnl.gov/nudat2/">"NuDat 2.x database"</a>. <a href="/facts/Brookhaven_National_Laboratory/L2JrG0K1">Brookhaven National Laboratory</a>.</li> <li>Holden, Norman E. (2004). "11. Table of the Isotopes". In Lide, David R. (ed.). <i><a href="/facts/CRC_Handbook_of_Chemistry_and_Physics/qjxzC2Cu">CRC Handbook of Chemistry and Physics</a></i> (85th ed.). <a href="/facts/Boca_Raton%2c_Florida/9gcNen3S">Boca Raton, Florida</a>: <a href="/facts/CRC_Press/duTuH4hz">CRC Press</a>. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 978-0-8493-0485-9.</li></ul></li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>Dickin, Alan P. (2018). Radiogenic Isotope Geology (3 ed.). Cambridge: Cambridge University Press. ISBN 978-1-107-09944-9. <a href="978-1-107-09944-9" target="_blank">978-1-107-09944-9</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>Reddy, Eashwer K.; Robinson, Ralph G.; Mansfield, Carl M. (January 1986). "Strontium 89 for Palliation of Bone Metastases". Journal of the National Medical Association. 78 (1): 27–32. ISSN 0027-9684. PMC 2571189. PMID 2419578. <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2571189" target="_blank">https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2571189</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>Wilken, R.D.; Diehl, R. (1987). "Strontium-90 in environmental samples from Northern Germany before and after the Chernobyl accident". Radiochimica Acta. 41 (4): 157–162. doi:10.1524/ract.1987.41.4.157. S2CID 99369165. <a href="https://inis.iaea.org/search/search.aspx?orig_q=RN:19040220" target="_blank">https://inis.iaea.org/search/search.aspx?orig_q=RN:19040220</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>"Discovery by UMass Lowell-led team challenges nuclear theory". Space Daily. Retrieved 2022-06-26. <a href="https://www.spacedaily.com/reports/Discovery_by_UMass_Lowell_led_team_challenges_nuclear_theory_999.html" target="_blank">https://www.spacedaily.com/reports/Discovery_by_UMass_Lowell_led_team_challenges_nuclear_theory_999.html</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> <li id="fn:5"><p>mSr – Excited nuclear isomer. <a href="/wiki/Nuclear_isomer" target="_blank">/wiki/Nuclear_isomer</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li> <li id="fn:6"><p>Wang, Meng; Huang, W.J.; Kondev, F.G.; Audi, G.; Naimi, S. (2021). "The AME 2020 atomic mass evaluation (II). Tables, graphs and references*". Chinese Physics C. 45 (3): 030003. doi:10.1088/1674-1137/abddaf. <a href="/wiki/Doi_(identifier)" target="_blank">/wiki/Doi_(identifier)</a> <a href="#fnref:6" class="footnote-back-ref">↩</a></p></li> <li id="fn:7"><p>( ) – Uncertainty (1σ) is given in concise form in parentheses after the corresponding last digits. <a href="#fnref:7" class="footnote-back-ref">↩</a></p></li> <li id="fn:8"><p># – Atomic mass marked #: value and uncertainty derived not from purely experimental data, but at least partly from trends from the Mass Surface (TMS). <a href="#fnref:8" class="footnote-back-ref">↩</a></p></li> <li id="fn:9"><p>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></p></li> <li id="fn:10"><p># – Values marked # are not purely derived from experimental data, but at least partly from trends of neighboring nuclides (TNN). <a href="#fnref:10" class="footnote-back-ref">↩</a></p></li> <li id="fn:11"><p>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:11" class="footnote-back-ref">↩</a></p></li> <li id="fn:12"><p>Modes of decay: EC:Electron captureIT:Isomeric transitionn:Neutron emissionp:Proton emission <a href="/wiki/Electron_capture" target="_blank">/wiki/Electron_capture</a> <a href="#fnref:12" class="footnote-back-ref">↩</a></p></li> <li id="fn:13"><p>Bold italics symbol as daughter – Daughter product is nearly stable. <a href="#fnref:13" class="footnote-back-ref">↩</a></p></li> <li id="fn:14"><p>Bold symbol as daughter – Daughter product is stable. <a href="#fnref:14" class="footnote-back-ref">↩</a></p></li> <li id="fn:15"><p>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></p></li> <li id="fn:16"><p>( ) spin value – Indicates spin with weak assignment arguments. <a href="#fnref:16" class="footnote-back-ref">↩</a></p></li> <li id="fn:17"><p># – Values marked # are not purely derived from experimental data, but at least partly from trends of neighboring nuclides (TNN). <a href="#fnref:17" class="footnote-back-ref">↩</a></p></li> <li id="fn:18"><p>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:18" class="footnote-back-ref">↩</a></p></li> <li id="fn:19"><p>Believed to decay by β+β+ to 84Kr <a href="#fnref:19" class="footnote-back-ref">↩</a></p></li> <li id="fn:20"><p>Used in rubidium–strontium dating <a href="/wiki/Rubidium%E2%80%93strontium_dating" target="_blank">/wiki/Rubidium%E2%80%93strontium_dating</a> <a href="#fnref:20" class="footnote-back-ref">↩</a></p></li> <li id="fn:21"><p>Fission product <a href="/wiki/Fission_product" target="_blank">/wiki/Fission_product</a> <a href="#fnref:21" class="footnote-back-ref">↩</a></p></li> <li id="fn:22"><p>Fission product <a href="/wiki/Fission_product" target="_blank">/wiki/Fission_product</a> <a href="#fnref:22" class="footnote-back-ref">↩</a></p></li> <li id="fn:23"><p>Fission product <a href="/wiki/Fission_product" target="_blank">/wiki/Fission_product</a> <a href="#fnref:23" class="footnote-back-ref">↩</a></p></li> <li id="fn:24"><p>Sumikama, T.; et al. (2021). "Observation of new neutron-rich isotopes in the vicinity of 110Zr". Physical Review C. 103 (1): 014614. Bibcode:2021PhRvC.103a4614S. doi:10.1103/PhysRevC.103.014614. hdl:10261/260248. S2CID 234019083. <a href="https://journals.aps.org/prc/abstract/10.1103/PhysRevC.103.014614" target="_blank">https://journals.aps.org/prc/abstract/10.1103/PhysRevC.103.014614</a> <a href="#fnref:24" class="footnote-back-ref">↩</a></p></li> </ol>