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.

Atomic Weight:  3353
Density:        343.87 g/cm3
Melting Point:  23 °C
 Boiling Point: 43 °C