Home 62 Sm Samarium back to the periodic table

Atomic number   62
Symbol   Sm
Atomic weight   150.36
Density [g/cm3]   7.54
Melting point [°C]   1072
Boiling point [°C]   1778
1st Ionization energy [eV]   5.63
Electronic configuration   [Xe] 4f6 6s2
Oxidation number (most stable)   3, 2
Atomic radius [pm]   180.2
Ionic radius [pm]   96 (3+)
Abundance in crustal rocks [ppm]   7.0
Origin of the name   after the mineral Samarskit.
Discovery   1879 by the French Lecoq de Boisbaudran
Uses   only within special areas, so for doping laser crystals for production in special glasses and as neutron absorbers in the nuclear technology.

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© 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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