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| |
| name |
Chlorine |
| latin |
Chlorum |
| french |
Chlore |
| german |
Chlor |
| symbol |
Cl |
| proton number |
17 |
| atomic weight |
35.4527 |
| Pauling electronegativity |
3.16 |
| electronic configuration |
[Ne] 3s23p5
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| melting point |
171.6 K, -101.55°C, -150.79°F |
| boiling point |
239.11 K, -34.04°C, -29.27°F |
| group |
17 |
| period |
3 |
| state (by 20°C) |
gas |
| oxidation states |
-1, +1, +3, +5, +7 |
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Discoverer
| Year of discovery |
Discoverer |
| 1774 |
Carl Wilhelm Scheele (1742-1786) |
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Czech version