manganese

Atomic number: 25
Atomic weight: 54.93804
Symbol: Mn
Group number: 7
Electronic configuration: [Ar].3d⁵.4s²

Physical data

Standard state: solid at 298 K
Colour: silvery metallic
Density of solid at ambient temperature/kg m-3: 7470
Molar volume/cm3: 7.35

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