Neon vs Cesium
| Property | Ne Neon | Cs Cesium |
|---|---|---|
| Atomic number | 10 | 55 |
| Symbol | Ne | Cs |
| Name | Neon | Cesium |
| Category | noble-gas | alkali-metal |
| Standard Atomic Weight | 20.1797 u | 132.905452 u |
| Period | 2 | 6 |
| Group | 18 | 1 |
| Block | p | s |
| Phase at STP | gas | solid |
| Electron configuration | [He]2s22p6 | [Xe]6s1 |
| Oxidation states | [0] | [-1, 1] |
| Electronegativity (Pauling) | N/A | 0.79 |
| Electron affinity | -1.2 eV | 0.4716 eV |
| Density | 0.8999 kg/m³ | 1930 kg/m³ |
| Melting point | -248.59 °C | 28.44 °C |
| Boiling point | -246.05 °C | 670.85 °C |
| Discovery year | 1898 | 1860 |