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Which statement is wrong?...

Which statement is wrong?

A

Oxidation number of oxygen is `+1` in peroxides

B

Oxidation number of oxygen is `+2` in oxygen difluoride

C

Oxidation number of oxygen is `-(1)/(2)` in superoxides

D

Oxidation number of oxygen is `(-2)` in most of its compounds

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The correct Answer is:
a
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