25 - Manganese transition metal
Discovered by Torbern Olof Bergman in 1774
- Atomic Radius (Å)
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.
| Shell | Electrons | Orbitals |
|---|---|---|
| 1 | 2 | 2 in 1s |
| 2 | 8 | 2 in 2s + 6 in 2p |
| 3 | 13 | 2 in 3s + 6 in 3p + 5 in 3d |
| 4 | 2 | 2 in 4s |
54.94 u
Atomic Mass
1.8 Å
Atomic Radius
2334 K
Boiling Point
1.39 Å
Covalent Radius
7.21 g/cm³
Density
-5.00e+1
Electron Affinity
1.55
Electronegativity
7.43 eV
First Ionization Energy
1519.15 K
Melting Point
4
Number of Shells
25
Atomic Number
2, 8, 13, 2
Electron Shell Occupations
