nobelium

Name nobelium
Symbol No
Atomic Weight 259.10
Atomic Number 102
CAS ID 10028-14-5
Group Number
Group Name Actinoid
Period Number 7
Origin of Name After Alfred Nobel (1820 - 1895)
Year Discovered 1940
Discovery Credits E. M. McMillan and P. Abelson at Berkeley, California, USA.
Class Metallic
Color Unknown, but probably metallic and silvery white or gray in appearance.
Standard State Presumably a solid at 77 F & 298 K
Description Radioactive metal which does not occur naturally

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