Atomic Number 27     Atomic Mass 58.9331976     Density 8.9 g/mL

State solid     Color lustrous, grey     Electronegativity 1.88

Melting Point 1495°C     Boiling Point 2870°C

Natural Isotope Co-59 100%

Abbreviated Electron Configuration [Ar] 3d⁷ 4s²

Discovered by Georg Brandt in 1735.