Periodic Table


Atomic number: 97
Atomic weight: 247
Symbol: Bk
Group number: (actinide)
Electronic configuration: [Rn].5f9.7s2


Berkelium is a radioactive rare earth metal, named after the University of California at Berkeley (USA). Apparently, berkelium tends to accumulate in the skeletal system. It is of no commercial importance and only a few of its compounds are known.

General information

Discoveror: Glenn T. Seaborg, Stanley G. Thompson, Albert Ghiorso
Date discovered: 1949
Discovered at: USA
Meaning of name: Named after "Berkeley", a city in California, home of the University of California, USA

Physical data

Standard state: solid at 298 K


This section gives some data for naturally occurring isotopes.
Nominal mass Accurate mass % natural abundance

Further Information

Copyright 1997 Mark Winter
Department of Chemistry at the University of Sheffield, Sheffield S3 7HF, England.

The current version of this document is at http://www.shef.ac.uk/~chem/web-elements-I/Bk.html