SmZ =  62

Named after Russian" Samarsky"
(AM) Atomic Mass 150.36  amu    Oxidation States +2, +3
   (BP) Boiling Point 1778  °C    (MP) Melting Point 1072  °C
   (ρ) Density 7.54  g/cm3    Crystal Structure Rhombohedral
   ( χ ) Electronegativity 1.2    (AR) Atomic Radius 1.66  Å
   Physical State Solid (C) Heat Capacity 0.197  J/g °C
Electronic-Config [Xe]  4f6  6s2     (I1) First Ionization E 544.18  kJ/mol
   (ΔHvap) Heat of Vaporization 165  kJ/mol     (ΔHfus) Heat of Fusion 8.62  kJ/mol
   Year of Discovery 1879    Location of Discovery France
(E°) Standard Potential Sm2+⇔ Sm (-2.680 V),   Sm3+⇔ Sm (-2.304 V)
Stable isotopes  144Sm,  149Sm,  150Sm,  152Sm,  154Sm
Discovered/Synthesized by Jean Charles Galissard de Marignac
Natural Source The mineral/ore bastnasite, monazite, loparite
Common Uses Magnets, electric motors, speakers and headphones, infrared sensors, infrared-absorbing glass
Other Info Used in the dating of rocks and meteorites.
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