Scandium vs Cesium
| Property | Sc Scandium | Cs Cesium |
|---|---|---|
| Atomic number | 21 | 55 |
| Symbol | Sc | Cs |
| Name | Scandium | Cesium |
| Category | transition-metal | alkali-metal |
| Standard Atomic Weight | 44.955908 u | 132.905452 u |
| Period | 4 | 6 |
| Group | 3 | 1 |
| Block | s | s |
| Phase at STP | solid | solid |
| Electron configuration | [Ar]4s23d1 | [Xe]6s1 |
| Oxidation states | [0, 1, 2, 3] | [-1, 1] |
| Electronegativity (Pauling) | 1.36 | 0.79 |
| Electron affinity | 0.188 eV | 0.4716 eV |
| Density | 2990 kg/m³ | 1930 kg/m³ |
| Melting point | 1540.85 °C | 28.44 °C |
| Boiling point | 2835.85 °C | 670.85 °C |
| Discovery year | 1879 | 1860 |