25
54.938 u
Mn
Manganese
Transition Metal
Atomic Structure
Physical State
Group
7
Period
4
Block
d
Electron Configuration
[Ar] 3d⁵ 4s²
Physical Properties
Atomic Mass:
54.938 u
Electronegativity:
1.55
Atomic Radius:
197 pm
Ionization Energy:
7.434 eV
Density:
7.44 g/cm³
Melting Point:
1519 K
Boiling Point:
2334 K
Historical Information
Discovered By:
Johan Gottlieb Gahn
Year Discovered:
1774