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Chlorine is a chemical element with the symbol Cl and atomic number 17. The second-lightest of the halogens, it appears between fluorine and bromine in the periodic table and its properties are mostly intermediate between them. Chlorine is a yellow-green gas at room temperature.
Discoverer: Carl Wilhelm Scheele
Atomic number: 17
Electronegativity (Pauling scale): 3.16
i used Chlorine for laundry work haha