Oxygen vs Manganese
| Property | O Oxygen | Mn Manganese |
|---|---|---|
| Atomic number | 8 | 25 |
| Symbol | O | Mn |
| Name | Oxygen | Manganese |
| Category | nonmetal | transition-metal |
| Standard Atomic Weight | 15.9994 u | 54.938044 u |
| Period | 2 | 4 |
| Group | 16 | 7 |
| Block | p | s |
| Phase at STP | gas | solid |
| Electron configuration | [He]2s22p4 | [Ar]4s23d5 |
| Oxidation states | [-2, -1, 0, 1, 2] | [-3, -1, 0, 1, 2, 3, 4, 5, 6, 7] |
| Electronegativity (Pauling) | 3.44 | 1.55 |
| Electron affinity | 1.4611 eV | -0.5 eV |
| Density | 1.429 kg/m³ | 7300 kg/m³ |
| Melting point | -218.79 °C | 1245.85 °C |
| Boiling point | -182.95 °C | 2060.85 °C |
| Discovery year | 1771 | 1774 |