Atomic Number: 27

Name: Cobalt

Atomic symbol: Co

Atomic Weight: 51.9332

Electron configuration: 1s²2s²2p⁶3s²3p⁶3d⁷4s²

Ionization energies: 758 kJ/mol

Pauling electronegativity: 1.8

Melting Point: 1495^oC

Boiling Point: 2870^oC

Density: 8.9 g/cm³

Covalent radius: 1.16 angstroms

Ionic radius: 0.79 angstroms (+2); 0.63 angstroms (+3)

Common oxidation states in compounds: +2, +3