Name berkelium
Symbol Bk
Atomic Weight 247.07
Atomic Number 97
CAS ID 7440-40-6
Group Number (none)
Group Name Actinoid
Period Number 7
Origin of Name English, Berkeley, CA, USA
Year Discovered 1949
Discovery Credits Produced by S. G. Thompson, A. Ghiorso, and G. T. Seaborg.
Class Metallic
Color Unknown, possibly metallic and gray or silvery white in appearance
Standard State Solid at 77 F & 298 K
Description Radioactive silvery metal. Attacked by oxygen, steam, and acids, but not by alkalis.

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