Beryllium vs Aluminum
| Property | Be Beryllium | Al Aluminum |
|---|---|---|
| Atomic number | 4 | 13 |
| Symbol | Be | Al |
| Name | Beryllium | Aluminum |
| Category | alkaline-earth-metal | post-transition-metal |
| Standard Atomic Weight | 9.012183 u | 26.981538 u |
| Period | 2 | 3 |
| Group | 2 | 13 |
| Block | s | p |
| Phase at STP | solid | solid |
| Electron configuration | [He]2s2 | [Ne]3s23p1 |
| Oxidation states | [0, 1, 2] | [-2, -1, 0, 1, 2, 3] |
| Electronegativity (Pauling) | 1.57 | 1.61 |
| Electron affinity | -0.52 eV | 0.4328 eV |
| Density | 1850 kg/m³ | 2700 kg/m³ |
| Melting point | 1286.85 °C | 660.287 °C |
| Boiling point | 2470.85 °C | 2518.85 °C |
| Discovery year | 1797 | 1825 |