108
Hassium
Atomic Number108
Atomic Mass269 u
CategoryTransition Metal
State at Room TempSolid
Year Discovered1984
About Hassium
Named after Hassia, the Latin name for Hesse, the German state home of the Darmstadt accelerator that created it. Thousands of atoms have been made, each decaying within seconds. Chemical tests suggest it behaves like a heavier osmium, forming a volatile tetroxide. Predicted to be among the densest substances in existence.
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