Chlorine vs Krypton
| Property | Cl Chlorine | Kr Krypton |
|---|---|---|
| Atomic number | 17 | 36 |
| Symbol | Cl | Kr |
| Name | Chlorine | Krypton |
| Category | halogen | noble-gas |
| Standard Atomic Weight | 35.4515 u | 83.798 u |
| Period | 3 | 4 |
| Group | 17 | 18 |
| Block | p | p |
| Phase at STP | gas | gas |
| Electron configuration | [Ne]3s23p5 | [Ar]4s23d104p6 |
| Oxidation states | [-1, 1, 2, 3, 4, 5, 6, 7] | [0, 1, 2] |
| Electronegativity (Pauling) | 3.16 | 3 |
| Electron affinity | 3.6127 eV | -1 eV |
| Density | 3.214 kg/m³ | 3.733 kg/m³ |
| Melting point | -101.5 °C | -157.36 °C |
| Boiling point | -34.04 °C | -153.42 °C |
| Discovery year | 1774 | 1898 |