NO. 108Transition

Hs

Hassium

Hassium is a superheavy element predicted to resemble osmium in its chemical behavior.

Crystal Structure

Hexagonal close-packed (predicted)

Atomic Mass277 u

Density21 g/cm³

Melting Point2500 K

Boiling Point4800 K

Atomic Radius134 pm

Electronegativity1.3

Ionization Energy620 kJ/mol

Electron Affinity0 kJ/mol

Bonding TypeMetallic

Oxidation States8

Acid/BaseBasic

ReactivityLow

Electron Configuration

[Rn] 5f14 6d6 7s2

Discovered ByGSI Darmstadt

Year1984

Known Isotopes

Hs-277