curium

Name curium
Symbol Cm
Atomic Weight 247.07
Atomic Number 96
CAS ID 7440-51-9
Group Number (none)
Group Name Actinoid
Period Number 7
Origin of Name Named after Pierre and Marie Curie.
Year Discovered 1944
Discovery Credits Prepared by G. T. Seaborg, Ra. a. James, and A. Ghiorso in 1944 at Berdeley, California, USA.
Class Metallic
Color Silver
Standard State Solid at 77 F & 298 K
Description Radioactive, silvery metal which does not occur naturally. Attacked by oxygen, steam, and acids but not alkalis

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