Name:  Cobalt

Atomic Symbol and Mass Number: Co [27]

Electron Configuration: [Ar] 3d   4s

Atomic Radii: 200 pm

Electron Affinity: 63.7 kJ mol-1

Oxidation states: -3,-1, +1, +2, +3, +4, +5

Electronegativity value: 1.88

Elemental Group: Transition Metal

Uses and properties:

• Bluish-white, lustrous, hard, brittle metal

• Ferromagnetic

• The metal is chemically active and results to formation of compounds

• Used in alloys for aircraft engine parts and in alloys with corrosion resistant use

• Batteries and electroplating

• Radioactive Cobalt is used in the treatment of cancer

• A component of vitamin B12

• Used in guitar pickups and high speed motors

 

Lewis diagram: