mendelevium

Name mendelevium
Symbol Md
Atomic Weight 258.10
Atomic Number 101
CAS ID 7440-11-1
Group Number
Group Name Actinoid
Period Number 7
Origin of Name Named after Dmitri Mendeleyev
Year Discovered 1949
Discovery Credits Prepared by A. Ghiorso, B. G. Harvey, G. R. Choppin, S. G. Thompson, and G. T. Seaborg at Berkeley, California, USA.
Class Metallic
Color Unknown, but probably metallic and silvery white or gray in appearance.
Standard State Presumable a solid at 77 F & 298 K
Description Radioactive metal which does not occur naturally.

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