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samarium.asc
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1992-08-24
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532b
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16 lines
SAMARIUM
Atomic symbol - Sm
Atomic weight - 150.36
Atomic number - 62
Electron configuration - 2-8-18-24-8-2
Oxidation states - +2, +3
State of matter - solid
Heavy metal-brittle
Discovered in 1879 by P.-É. Lecoq de Boisbaudran
Boils at 1778 °C, melts at 1072 °C
Notes:
Samarium is a silvery-white rare metal that has several allotropic forms. Some
uses are in special luminescent and infrared absorbing glasses, organic and
inorganic catalysis, and in electronics and ceramics.