Magnesium vs Iron
| Property | Mg Magnesium | Fe Iron |
|---|---|---|
| Atomic number | 12 | 26 |
| Symbol | Mg | Fe |
| Name | Magnesium | Iron |
| Category | alkaline-earth-metal | transition-metal |
| Standard Atomic Weight | 24.3055 u | 55.845 u |
| Period | 3 | 4 |
| Group | 2 | 8 |
| Block | s | s |
| Phase at STP | solid | solid |
| Electron configuration | [Ne]3s2 | [Ar]4s23d6 |
| Oxidation states | [0, 1, 2] | [-4, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7] |
| Electronegativity (Pauling) | 1.31 | 1.83 |
| Electron affinity | -0.4 eV | 0.151 eV |
| Density | 1740 kg/m³ | 7874 kg/m³ |
| Melting point | 649.85 °C | 1537.85 °C |
| Boiling point | 1089.85 °C | 2860.85 °C |
| Discovery year | 1755 | N/A |