25Mn54.93804
Manganese
Transition Metal
Solid at STP
Period 4Group 7Block DDiscovered 1774
[Ar]4s2 3d5
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.
📖 Read more on Wikipedia →Atomic Properties
| Atomic Number | 25 |
| Atomic Mass | 54.93804 u |
| Electron Configuration | [Ar]4s2 3d5 |
| Oxidation States | +7, +4, +3, +2 |
| Electronegativity | 1.55 (Pauling) |
| Atomic Radius | 197 pm |
| Ionization Energy | 7.434 eV |
| Block | D |
Physical Properties
| Appearance | silvery metallic |
| Standard State | Solid |
| Melting Point | 1519 K (1245.8 °C) |
| Boiling Point | 2334 K (2060.8 °C) |
| Density | 7.3 g/cm³ |
| Molar Heat | 26.32 J/(mol·K) |
| CPK Color | #9C7AC7 |
Classification
| Category | Transition Metal |
| Group Block | Transition metal |
| Period | 4 |
| Group | 7 |
| Block | D |
Discovery
| Year Discovered | 1774 |
| Discovered By | Torbern Olof Bergman |
| Electron Shells | 2, 8, 13, 2 |