samarium

Name samarium
Symbol Sm
Atomic Weight 150.36
Atomic Number 62
CAS ID 7440-19-9
Group Number
Group Name Lanthanoid
Period Number 6
Origin of Name Named after the mineral Samarskite.
Year Discovered 1879
Discovery Credits Discovered by P. E. Lecoq de Boisbaudran at Paris, France.
Class Metallic
Color Silvery White
Standard State Solid at 77 F & 298 K
Description Silvery white metal of the lanthanide group. Relatively stable in dry air but in moist air an oxide coating forms. Used in permanent magnets, organic reagents, special glass, catalysts, ceramics, and electronics.

Diagnostic tests: 
There are no simple diagnostic tests to identify Samarium.
X-ray fluorescence spectroscopy is commonly employed to identify and analyze members of the Rare-Earth group elements.

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