- Atomic Radius (Å)
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.
62
Atomic Number
150.36
Atomic Mass (u)
1345.15
Melting Point (K)
2067
Boiling Point (K)
7.52
Density (solid: g/cm³, gas: g/liter)
2.6
Atomic Radius (Å)
1.98
Covalent Radius (Å)
1.17
Electronegativity
5.64
First Ionization Energy (eV)
15.63
Electron Affinity
6
Number of Shells
2, 8, 18, 24, 8, 2
Electron Shell Occupations
0.2
Specific Heat (J/g)