62 Sm 150.362

Samarium

LANTHANIDE

Phase: Solid

Discovered: Lecoq de Boisbaudran

Block: F

Summary

Samarium is a chemical element with symbol Sm and atomic number 62. It is a moderately hard silvery metal that readily oxidizes in air. Being a typical member of the lanthanide series, samarium usually assumes the oxidation state +3.

Appearance: silvery white

Source: Wikipedia

Physical Properties

Atomic Mass 150.362 u

Density 7.52 g/cm³

Melting Point 1345 K

Boiling Point 2173 K

Molar Heat 29.54 J/(mol·K)

Electron Affinity 15.63 kJ/mol

Ionization Energies

1^st: 544.5 kJ/mol

2^nd: 1070 kJ/mol

3^rd: 2260 kJ/mol

4^th: 3990 kJ/mol