Atomic Number 25     Atomic Mass 54.9380471     Density 7.20 g/mL

State solid     Color silvery     Electronegativity 1.55

Melting Point 1244°C     Boiling Point 1962°C

Natural Isotope Mn-55 100%

Abbreviated Electron Configuration [Ar] 3d⁵ 4s²

Discovered by Johann Gahn in 1774.