25Solid
Mn 54.938 Atomic mass · uTransition metals
Manganese
Manganese is a chemical element with symbol Mn and atomic number 25. It is not found as a free element in nature; it is often found in combination with iron, and in many minerals. Manganese is a metal with important industrial metal alloy uses, particularly in stainless steels.
Discovery 1774 (Torbern Olof Bergman)
K2L8M13N2
Physical properties
Values for the element in its standard state.
- Density
- 7.47g/cm³
- Melting point
- 1,519K
- Boiling point
- 2,334K
- Atomic radius
- 139pm
- Bonding type
- Metallic
- Molar heat
- 26.32J/(mol·K)
Inside the atom
Electron arrangement and the energy behind its behavior.
Full electron configuration
1s, 2 electrons; 2s, 2 electrons; 2p, 6 electrons; 3s, 2 electrons; 3p, 6 electrons; 3d, 5 electrons; 4s, 2 electrons;
[Ar] represents 18 core electrons. The full view shows them explicitly.
25 electrons Orbital order preserved from source
- Electronegativity
- 1.55Pauling scale
- First ionization energy
- 717kJ/mol
- Electron affinity
- 0kJ/mol
- Van der Waals radius
- Not available
Mn ManganeseAtomic number 25
717kJ/mol
Atomic numberGaps indicate unavailable data
About manganese
- Appearance
- Silvery metallic
- Discovery
- 1774 (Torbern Olof Bergman)
- Data source
- Read the reference
A missing value means it is unavailable in this reference dataset. Values can vary with measurement method and conditions.