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The Chemistry of the Halogens - http://chemed.chem.purdue.edu/genchem/topicreview/bp/ch10/group7.php
Covers their properties, methods of preparation, general trends, the hydrogen halides, and oxyacids of the halogens and their salts. |
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Doc Brown's Chemistry Clinic: The Halogens - http://www.wpbschoolhouse.btinternet.co.uk/page03/The_Halogens.htm
Includes an overview, general properties, reactivity trends, and information about the industrial electrolysis of sodium chloride solution. |
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Visual Elements: The Halogens - http://www.chemsoc.org/viselements/pages/data/intro_groupvii_data.html
Overview, general properties, and chemical data for the group. |