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. |
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. |
Visual Elements: The Halogens «
http://www.chemsoc.org/viselements/pages/data/intro_groupvii_data.html | | Overview , general properties , and chemical data for the group. |
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