dubnium [Db]

Introduction

Named after Dubna, Russia, the site of the Joint Institute for Nuclear Research (JINR). Discovered at the JINR in 1967. A team from the Lawrence Berkeley Laboratory confirmed the discovery.

Occurrence

does NOT occur naturally

Characteristics

• 5 known isotopes, all radioactive
• Db-262 has longest half-life - 34 seconds.

More general terms

• transactinide
• radioactive element