Bh

Bohrium

Identification

CAS Number: 54037-14-8

Discovery Year: 1976

Discoverer: Heavy Ion Research Laboratory (HIRL)

Discovery Location: Germany

Properties

Atomic Mass: 274 →Density: 37.1 g/cm³ →

Electronic Structure

Electron Config: [Rn] 5f14 6d5 7s2

Block: d

Period: 7 →Group: 7 →

Abundance & Geochemistry

Goldschmidt Class: synthetic

About

Radioactive transition metal. Half-life of approximately 1/500 s. Discovered by the Joint Institute for Nuclear Research at Dubna (U.S.S.R.) in 1976. Confirmed by West German physicists at the Heavy Ion Research Laboratory at Darmstadt.

Isotopes

Bh-270 270 ☢ 3.80 min

Bh-274 274 ☢ 3.40 min