25 Mn 54.938
Manganese
transition metal
Properties
- Atomic number
- 25
- Atomic mass
- 54.938 u
- Category
- transition metal
- Group
- 7
- Period
- 4
- Block
- d-block
- State (room temp)
- Solid
- Outer-shell electrons
- 2
- Electronegativity
- 1.55 (Pauling)
- Density
- 7.21 g/cm³
- Melting point
- 1245.85 °C
- Boiling point
- 2060.85 °C
Electron configuration
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁵
Noble-gas shorthand: [Ar] 3d⁵ 4s²
Electrons per shell: 2, 8, 13, 2 — that's 2 in the outermost shell.
About 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.
- Discovered by Torbern Olof Bergman
- Appearance: silvery metallic
Position in the periodic table
Data compiled from Wikipedia, PubChem, and IUPAC. Source.