Boron vs Magnesium
| Property | B Boron | Mg Magnesium |
|---|---|---|
| Atomic number | 5 | 12 |
| Symbol | B | Mg |
| Name | Boron | Magnesium |
| Category | metalloid | alkaline-earth-metal |
| Standard Atomic Weight | 10.8135 u | 24.3055 u |
| Period | 2 | 3 |
| Group | 13 | 2 |
| Block | p | s |
| Phase at STP | solid | solid |
| Electron configuration | [He]2s22p1 | [Ne]3s2 |
| Oxidation states | [-5, -1, 0, 1, 2, 3] | [0, 1, 2] |
| Electronegativity (Pauling) | 2.04 | 1.31 |
| Electron affinity | 0.27972 eV | -0.4 eV |
| Density | 2370 kg/m³ | 1740 kg/m³ |
| Melting point | 2074.85 °C | 649.85 °C |
| Boiling point | 3999.85 °C | 1089.85 °C |
| Discovery year | 1808 | 1755 |