PERIODIC ELEMENT
Sm (Samarium)

 



Atomic number : 62
Atomic mass : 150.35 g.mol-1
Electronegativity according to Pauling : 1.2
Density : 6.9 g.cm-3 at 20 °C
Melting point : 1072 °C
Boiling point : 1790 °C
Vanderwaals radius : unknown
Ionic radius : unknown
Isotopes : 11
Electronic shell : [ Xe ] 4f6 6s2
Energy of first ionisation : 542.3  kJ.mol-1
Energy of second ionisation : 1066 kJ.mol-1
Standard potential : - 2.41 V
Discovered by : Paul Emile Lecoq de Boisbaudran in 1879
 
Atomic Structure Uses (used in magnets, in alloys with cobalt, and nuclear reactors)