Hs

Hassium

Identification

CAS Number: 54037-57-9

Discovery Year: 1984

Discoverer: Heavy Ion Research Laboratory (HIRL)

Discovery Location: Germany

Properties

Atomic Mass: 269 →Density: 40.7 g/cm³ →

Electronic Structure

Electron Config: [Rn] 5f14 6d6 7s2

Block: d

Period: 7 →Group: 8 →

Abundance & Geochemistry

Goldschmidt Class: synthetic

About

Radioactive transition metal first synthesized in 1984 by a German research team led by Peter Armbruster and Gottfried Muenzenberg at the Institute for Heavy Ion Research at Darmstadt.

Isotopes

Hs-269 269 ☢ 27.0 s

Hs-270 270 ☢ 30.0 s