Chlorine vs Radon
| Property | Cl Chlorine | Rn Radon |
|---|---|---|
| Atomic number | 17 | 86 |
| Symbol | Cl | Rn |
| Name | Chlorine | Radon |
| Category | halogen | noble-gas |
| Standard Atomic Weight | 35.4515 u | 222 u |
| Period | 3 | 6 |
| Group | 17 | 18 |
| Block | p | p |
| Phase at STP | gas | gas |
| Electron configuration | [Ne]3s23p5 | [Xe]6s24f145d106p6 |
| Oxidation states | [-1, 1, 2, 3, 4, 5, 6, 7] | [0, 2, 6] |
| Electronegativity (Pauling) | 3.16 | N/A |
| Electron affinity | 3.6127 eV | -0.7 eV |
| Density | 3.214 kg/m³ | 9.73 kg/m³ |
| Melting point | -101.5 °C | -71.15 °C |
| Boiling point | -34.04 °C | -61.7 °C |
| Discovery year | 1774 | 1900 |