bohrium [Bh]

Introduction

Named after Danish physicist Neils Bohr. Discovered in 1976 at the Joint Institute for Nuclear Research (JINR) in Dubna, Russia. Confirmed in 1981 by German physicists Peter Armbruster & Goddfried Muzenberg at the Gesellshaft fur Schwerionenforschung.

Occurrence

• borium-262 was artificially produced by fusion of bismuth-209 & chromium-54
• about 70 atoms of bohrium-262 have been produced

Characteristics

• highly radioactive
• 5 isotopes known 261, 262, 264, 266 & 267
• all isotopes emit alpha particles
• bohrium-262 with the shortest 1/2life of 112 milliseconds; bohrium-267 with the longest 1/2life of 17 seconds

Uses

none

More general terms

• transactinide
• radioactive element

Additional terms

• periodic table