Chlorine vs Argon
Pick up to 3 elements and see how they stack up.
| Property | Chlorine | Argon |
|---|---|---|
| Atomic number | 17 | 18 |
| Atomic mass | 35.45 | 39.948 |
| Electronegativity | 3.16 | — |
| Melting point | 171.6 K (-101.5 °C) | 83.81 K (-189.3 °C) |
| Boiling point | 239.11 K (-34 °C) | 87.3 K (-185.8 °C) |
| Density | 3.214 g/L | 1.784 g/L |
| Atomic radius | 175 pm | 188 pm |
| Ionization energy | 12.968 eV | 15.76 eV |
| Discovered | 1774 | 1894 |
| Category | Halogen | Noble gas |
| State at room temp. | Gas | Gas |
| Block | p | p |
| Group | 17 | 18 |
| Period | 3 | 3 |
| Valence electrons | 7 | 8 |
| Common charges | −1 | 0 |
| Electron configuration | [Ne] 3s2 3p5 | [Ne] 3s2 3p6 |