25Mn

Manganese

Transition Metal

Manganese (Mn) is element 25, a transition metal, in period 4 and group 7 of the periodic table. Its standard atomic weight is 54.938, it melts at 1246 °C and boils at 2061 °C. Discovered by Johan Gottlieb Gahn, 1774.

Atomic Number25

SymbolMn

NameManganese

Atomic Weight54.938 u

CategoryTransition Metal

Period4

Group7

Melting Point1246 °C

Boiling Point2061 °C

Density7.21 g/cm³

Electron Config[Ar] 3d5 4s2

Discovered ByJohan Gottlieb Gahn, 1774

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