Redox worksheet # 1 key

Sep 07, 2015 · The oxidation number of oxygen is always -2, except in peroxides (H2O2) where it is -1, and when it combined with fluorine (OF2) it is +2. The oxidation number of hydrogen is always +1 unless it is combined with a metal is -1. Practice. What are the oxidation numbers of each of the elements in the following substances? 1. Na = 0. 2. NaCl Na ... ................
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