Name:  Chromium

Atomic Symbol and Mass Number: Cr [24]

Electron Configurations of the Elements: [Ar] 3d   4s 

Atomic Radii: 200 pm

Electron Affinity: 64.3 kJ mol-1

Oxidation states: +6, +3, +2

Electronegativity value: 1.66

Elemental Group: Transition Metal

Uses and properties:

• Silver, lustrous, very hard metal that can take a high mirror polish

• Odorless, tasteless, and malleable

• Used in stainless steel

• Chromium plating on cars and bicycles exhibit high resistance to corrosion

• Catalyst

• Chromium compounds are valued as pigments for their vivid green, yellow, red and orange colors

 

Lewis diagram: