Chlorine
| Basic Information | Crystal Structure | Isotope | Facts | Related Links |
| Symbol: | Cl |
| Atomic Number: | 17 |
| Atomic weight: | 35.453u |
| Melting Point: | 172.16K |
| Boiling Point: | 239.1K |
| Number of Protons/Electrons: | 17 |
| Number of Neutrons: | 18 |
| Classification: | Halogen |
| Crystal Structure: | Orthorhombic |
| Density | 0.000317g/mL |
| Color: | green |
| Bonding radius: | 0.99A |
| Atomic radius: | 0.97A |
| Ionization Potential: | 12.967V |
| Electronegativity: | 3.16 |
| Heat of vaporization: | 10.2kJ/mol |
| Heat of fusion: | 3.203kJ/mol |
| Specific heat: | 0.48J/gK |
| Electron configuration: | [Ne]3s23p5 |
Crystal Structure
| Isotope | Half Life |
| Cl35 | Stable |
| Cl36 | 301000 years |
| Cl37 | Stable |
| Cl38 | 37.2 minutes |
| Date of Discovery: | 1774 |
| Discoverer: | Carl Wilhelm Scheele |
| Uses: | Water purification, bleaches |
| Obtained From: | Salt |