Manganese

Transition metal

Symbol: Mn

Atomic Number: 25

Standard State: Solid

Atomic Mass: 54.93804

Electron Configuration: [Ar]4s2 3d5

Electronegativity: 1.55

Atomic Radius: 197

Ionization Energy: 7.434

Melting Point: 1519

Boiling Point: 2334

Density: 7.3

Year Discovered: 1774