Manganese |
| Symbol | Mn |
|---|---|
| Latin name | Manganum |
| Atomic number | 25 |
| Period | 4 |
| Element category | Transition elements |
| Relative atomic mass | 54.93805 |
| Group | VII.B |
| Electronegativity | 1.5 |
| Oxidation numbers | 2, 3, 4, 6, 7 |
| Electron configuration | 1s2 2s2 2p6 3s2 3p6 3d5 4s2 |
| Density [g/cm3] | 7.44 |
| State | Solid |
| Melting point [°C] | 1244 |
| Boiling point [°C] | 2100 |
| Atomic radius [pm] | 161 |
| Covalent radius [pm] | 139 |
| Thermal conductivity [W m-1K-1] | 7.82 |
| Heat capacity [J K-1g-1] | 0.48 |
| Discovery | 1774 |
| Hardness [Mohs scale] | 5.0 |
| Brinell hardness [MPa] | 196 |
| Young's modulus [GPa] | 198 |
| Electrical conductivity [S m-1] | 6.2 · 105 |
| 1.st ionization energy [eV] | 7.434 |
| 2.nd ionization energy [eV] | 15.64 |
| 3.rd ionization energy [eV] | 33.667 |
| Stable isotopes | 1 |
| Unstable isotopes | 10 |