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  4. Which of the following is not a rule for calculating oxidation number?

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Q. Which of the following is not a rule for calculating oxidation number?

Redox Reactions

Solution:

Oxidation number of oxygen is $-2$ in most of its compounds. The exceptions are $-1$ in peroxides and $-1/2$ in superoxides, $+$2 in $OF_2$ and $+1$ in $O_2F_2$.