americium

Name americium
Symbol Am
Atomic Weight 246.06
Atomic Number 95
CAS ID 7440-35-9
Group Number
Group Name Actinoid
Period Number 7
Origin of Name Named after the American Continent
Year Discovered 1944
Discovery Credits Discovered by G. T. Seaborg, R. A. James, I. O. Morgan, and A. Ghiorso at Chicago, IL., USA.
Class Metallic
Color Silvery White
Standard State Solid at 77 F & 298 K
Description Radioactive, silvery metal which does not occur naturally. Attacked by air, steam, and acids, but not alkalis.

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