Silicon vs Cesium
| Property | Si Silicon | Cs Cesium |
|---|---|---|
| Atomic number | 14 | 55 |
| Symbol | Si | Cs |
| Name | Silicon | Cesium |
| Category | metalloid | alkali-metal |
| Standard Atomic Weight | 28.085 u | 132.905452 u |
| Period | 3 | 6 |
| Group | 14 | 1 |
| Block | p | s |
| Phase at STP | solid | solid |
| Electron configuration | [Ne]3s23p2 | [Xe]6s1 |
| Oxidation states | [-4, -3, -2, -1, 0, 1, 2, 3, 4] | [-1, 1] |
| Electronegativity (Pauling) | 1.9 | 0.79 |
| Electron affinity | 1.385 eV | 0.4716 eV |
| Density | 2329.6 kg/m³ | 1930 kg/m³ |
| Melting point | 1413.85 °C | 28.44 °C |
| Boiling point | 3264.85 °C | 670.85 °C |
| Discovery year | 1824 | 1860 |