Beryllium vs Silicon
| Property | Be Beryllium | Si Silicon |
|---|---|---|
| Atomic number | 4 | 14 |
| Symbol | Be | Si |
| Name | Beryllium | Silicon |
| Category | alkaline-earth-metal | metalloid |
| Standard Atomic Weight | 9.012183 u | 28.085 u |
| Period | 2 | 3 |
| Group | 2 | 14 |
| Block | s | p |
| Phase at STP | solid | solid |
| Electron configuration | [He]2s2 | [Ne]3s23p2 |
| Oxidation states | [0, 1, 2] | [-4, -3, -2, -1, 0, 1, 2, 3, 4] |
| Electronegativity (Pauling) | 1.57 | 1.9 |
| Electron affinity | -0.52 eV | 1.385 eV |
| Density | 1850 kg/m³ | 2329.6 kg/m³ |
| Melting point | 1286.85 °C | 1413.85 °C |
| Boiling point | 2470.85 °C | 3264.85 °C |
| Discovery year | 1797 | 1824 |