The halogens are the elements in group 17 of the periodic table, that is: fluorine, chlorine, bromine, iodine, and astatine.
Includes an overview, general properties, reactivity trends, and information about the industrial electrolysis of sodium chloride solution.
Covers their properties, methods of preparation, general trends, the hydrogen halides, and oxyacids of the halogens and their salts.
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