115
Moscovium
Atomic Number115
Atomic Mass290 u
CategoryPost-Transition
State at Room TempSolid
Year Discovered2003
About Moscovium
Named for the Moscow region, home of the Dubna team that created it with American partners at Livermore. Made by fusing calcium and americium. A few dozen atoms confirmed, gone in a fraction of a second. Known for years by its placeholder name ununpentium, which took on a life of its own in popular culture. Chemistry unknown.
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