Manganese
Chemical element
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Manganese is a chemical element; it has symbol Mn and atomic number 25. It is a hard, brittle, silvery metal, often found in minerals in combination with iron. Manganese was first isolated in the 1770s. Wikipedia
Symbol: Mn
Atomic number: 25
Atomic mass: 54.938044 u
Electron configuration: [Ar] 3d5 4s2
Melting point: 2,275°F (1,246°C)
Room temperature: solid
Discovery: Carl Wilhelm Scheele (1774)
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