Moscovium

<p>Moscovium is a <a href="/facts/Synthetic_element/azU9Nr1m">synthetic chemical element</a>; it has <a href="/facts/Chemical_symbol/2Fe1VAL0">symbol</a> Mc and <a href="/facts/Atomic_number/bgAr581S">atomic number</a> 115. It was first synthesized in 2003 by a joint team of Russian and American scientists at the <a href="/facts/Joint_Institute_for_Nuclear_Research/JrSF8sQQ">Joint Institute for Nuclear Research</a> (JINR) in <a href="/facts/Dubna/mn37rc4l">Dubna</a>, Russia. In December 2015, it was recognized as one of four new elements by the <a href="/facts/IUPAC%2fIUPAP_Joint_Working_Party/1mKaf9UW">Joint Working Party</a> of international scientific bodies <a href="/facts/International_Union_of_Pure_and_Applied_Chemistry/2AV6myCK">IUPAC</a> and <a href="/facts/International_Union_of_Pure_and_Applied_Physics/ah3BodlS">IUPAP</a>. On 28 November 2016, it was officially named after the <a href="/facts/Moscow_Oblast/699h9DNN">Moscow Oblast</a>, in which the JINR is situated.
</p><p>Moscovium is an extremely <a href="/facts/Radioactive/Ya6FVjt4">radioactive</a> element: its most stable known <a href="/facts/Isotope/KD9B1y6o">isotope</a>, moscovium-290, has a <a href="/facts/Half-life/kGVH8BAB">half-life</a> of only 0.65 seconds. In the <a href="/facts/Periodic_table/umdGIfUb">periodic table</a>, it is a <a href="/facts/P-block/BbzD5jUU">p-block</a> <a href="/facts/Transactinide_element/9PjYvCc3">transactinide element</a>. It is a member of the <a href="/facts/Period_7_element/H5QuVHGQ">7th period</a> and is placed in group 15 as the heaviest <a href="/facts/Pnictogen/jX4hvCkK">pnictogen</a>. Moscovium is calculated to have some properties similar to its lighter homologues, <a href="/facts/Nitrogen/Nf1QpGDz">nitrogen</a>, <a href="/facts/Phosphorus/27xCeIqs">phosphorus</a>, <a href="/facts/Arsenic/k1c4f44D">arsenic</a>, <a href="/facts/Antimony/YsA7lVgT">antimony</a>, and <a href="/facts/Bismuth/75FLjkoX">bismuth</a>, and to be a <a href="/facts/Post-transition_metal/wjp3aeGn">post-transition metal</a>, although it should also show several major differences from them. In particular, moscovium should also have significant similarities to <a href="/facts/Thallium/v35pGMJB">thallium</a>, as both have one rather loosely bound electron outside a quasi-closed <a href="/facts/Electron_shell/QxI30eh9">shell</a>. Chemical experimentation on single atoms has confirmed theoretical expectations that moscovium is less reactive than its lighter homologue bismuth. Over a hundred atoms of moscovium have been observed to date, all of which have been shown to have mass numbers from 286 to 290.
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Moscovium open-in-new

Moscovium