| General |
|---|
| Name | Chlorine | | Symbol | Cl | | Number | 17 | | Chemical series | Halogens | | Group / Period | 17 / 3 | | Block | p-block | | CAS registry number | 7782-50-5 |
| Physical properties |
|---|
| State | gas | | Density | 3.2 g/L | | Melting point | 171.6 K (-101.5 °C, -150.7 °F) | | Boiling point | 239.11 K (-34.04°C, -29.27°F) | | Critical point | 416.9 K, 7.991 MPa |
| Atomic properties |
|---|
| Atomic Weight | 35.453 g/mol | | Crystal structure | orthorhombic | | Electronegativity | 3.16 | | Atomic radius | 100 pm | | Atomic radius (calculated) | 79 pm | | Electron configuration | [Ne] 3s2 3p5 | | Electrons per shell | 2, 8, 7 | | Number of protons | 17 | | Number of neutrons | 18 |
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Argon