Cobalt (Co) is a hard, lustrous, gray transition metal used since 1400 BC.Georg Brandt (1694-1768) isolated the element from copper ore but his work was not initially recognized. Cobalt-based blue pigments (cobalt blue) have been used since ancient times for jewelry and paints, and to give a distinctive blue tint to glass. Also cobalt is primarily used as the metal, in the preparation of magnetic, wear-resistant and high-strength alloys.
The name cobalt comes from the word evil - miners would get sick due to poisonous arsenic-containing fumes upon smelting.
|Melting Point ( °C )||1,493°C|
|Boiling Point ( °C )||3,100°C|
|Earth crust (%)||0.003%|
|Discovery (Year)||Georg Brandt (1732)|
|Electron configuration||[Ar] 3d7 4s2|
|Ionization energy (eV)||7,881|