25
Mn
Manganese
Transition metal period 4 group 7 d-block discovered: 1774
As a chemical element
Properties of the atom — they do not depend on what substance it is part of.
- Atomic number
- 25
- Atomic mass
- 54.93804 a.m.u.
- Electron configuration
- [Ar]4s2 3d5
- Electronegativity
- 1.55 on the Pauling scale
- Atomic radius
- 197 pm
- Ionization energy
- 7.434 eV
- Oxidation states
- +7, +4, +3, +2
As a simple substance
Properties of the substance these atoms form under ordinary conditions.
- State at 25 °C
- Solid
- Melting point
- 1519 K (1 245,85 °C)
- Boiling point
- 2334 K (2 060,85 °C)
- Density
- 7.3 g/cm³