Mn
Manganese
Z 25 54.938 g/molTransition Metal
Nucleus
25 Protons
30 Neutrons
25 Electrons (7 Valence)
Shell distribution: K2 • L8 • M13 • N2 • O0 • P0 • Q0
Electron Configuration
Energy
7p
6d
5f
7s
6p
5d
4f
6s
5p
4d
5s
4p
3d
4s
3p
3s
2p
2s
1s
[Ar]3d54s2
Oxidation States
CommonRare
0
Pick a state to see its ions
Radii
Empirical
140 pm1.4 Å
Calculated
161 pm1.61 Å
Covalentlow spin
139±5 pm1.39±0.05 Å
Van der Waals
197 pm1.97 Å
IonicMn2+ · high spin
83 pm0.83 Å
Crystal Structure
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Body-centered cubicStandard state
Pearson symbol
cI58
Space group
I43m No. 217
Density
7.3 g/cm³