25Mn
Manganese
망가니즈 · マンガン
Transition metal
Atomic number25
ElementMn — Manganese
Atomic mass54.938
CategoryTransition metal
Group7
Period4
Electron config[Ar] 3d5 4s2
Shells2,8,13,2
State (RT)Solid
Melting pt1246°C
Boiling pt2061°C
Electronegativity1.55
Discovered1774
Main usesSteel, batteries, alloys
2 · 8 · 13 · 2