Name:  Manganese

Atomic Symbol and Mass Number: Mn [25]

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

Atomic Radii: 243 pm

Electron Affinity: 0

Oxidation states: +2, +3, +4, +5, +6, +7

Electronegativity value: 1.55

Elemental Group: Transition Metal

Uses and properties:

• Gray-white, hard, brittle, metal that can take a high polish

• Nonmagnetic and tarnishes upon oxidation and heating

• Twelfth most abundant element in the earth’s crust

• Has more than one common oxidation state - pink, brown, black, and green

• Used in making colored glass

• Manganese dioxide is used as a black-brown pigment in paint and as a filler in dry cell batteries

• Desulfurizes and deoxidizes steel

• Organo-manganese compounds can be added to gasoline to increase its octane rating and reduce engine knock

 

Lewis diagram: