Problem 10.1
What is the oxidation state of K in KO,?
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It has only one electron in its valence shell and can only take the +1 oxidation state. Now, in KO2, let oxidation number of oxygen be x. Therefore, 1+2x=0 as K=+1 and KO2 is a neutral molecule. The oxidation number of oxygen in KO2 is -1/2.
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