| http://www.w3.org/ns/prov#value | - For anyone interested there is an excellent description and animation of these (and other) structures on the Oklahoma State University???s Department of Chemistry site (http://intro.chem.okstate.edu/1314f00/lecture/chapter10/vsepr.html).My study of chemistry stopped at A-level 35 years ago so thanks for the heads up about ???Chemistry: The Practical Science??? (http://books.google.co.uk/books?id=V
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