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Chemical element: Chlorine (Cl)
| Atomic Number: | 17 |
| Element Symbol: | Cl |
| Element Name: | Chlorine |
| Atomic Weight: | 35.453 |
| Group Number: | 17 |
| Group Name: | Halogen |
| Period Number: | 3 |
| Block: | p-block |
| Ground State Configuration: | [Ne] 3s2 3p5 |
| Ground State Level: | 2Po3/2 |
| Standard State: | Gas |
| Common Valences: | 1,3,5,7 |
| Bond Length: | 189.1 |
| Atomic Radius Empirical: | 100 |
| Atomic Radius Calculated: | 79 |
| Covalent Radius Empirical: | 99 |
| Vander Waals Radius: | 175 |
| Electron Affinity: | 349.0 |
| First Ionization Energy: | 1251.2 |
| Pauling Electronegativity: | 3.16 |
| Sanderson Electronegativity: | 3.48 |
| Allred Rochow Electronegativity: | 2.83 |
| Mulliken Jaffe Electronegativity: | 3.10 |
| Allen Electronegativity: | 2.869 |
| Molar Volume: | 17.39 |
| Velocity Of Sound: | 206 |
| Bulk Modulus: | 1.1 (liquid) |
| Electrical Resistivity: | > 10**10 |
| Refractive Index: | 1.000773 |
| Melting Point: | -101.5 |
| Boiling Point: | -34.04 |
| Critical Temperature: | 144 |
| Thermal Conductivity: | 0.0089 |
| Enthalpy Of Fusion: | 3.2 (per mol Cl atoms) |
| Enthalpy Of Vaporization: | 10.2 (per mole Cl atoms) |
| Enthalpy Of Atmization: | 122 |
| Most Common Oxidation Numbers: | 7,5,3,1,-1 |
| Color: | Yellowish green |
| Classification: | Non-metallic |
| Discovered By: | Carl William Scheele |
| Discovered At: | Sweden |
| Discovered When: | 1774 |
| Origin Of Name: | From the Greek word chloros meaning pale green |
Calculate the molecular weight of Chlorine or molecular weight Cl.
Also see the full list of chemical elements and atomic weights.
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