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...Worksheet determination of oxidation number or valence rules to apply a the net charges on all molecules is zero therefore sum positive equals negative charge free elements b metals group periodic table c d aluminum e hydrogen except in hydrides where it f fluorine g other halogens usually when united with more electronegative element h oxygen peroxides such as o and na bonded only compound determine an use known states first by applying above unknown state that must be added total make for example find sulfur so hso s overall each following nacabo se seo sb n al no p po bah si sio mn mno i naio ca cr k cro br hbro aso namno nh co cas alsio khso cl mg clo mnbr chemistry chapter worksheets chemical formulas nomenclature page fix formula using your which shows common tables textbook show polyatomic ions check compounds this if write correct blank does not equal there than once combination possible them transition metal cuno cu copper ii two non lowest electronegativity will its carbon an...