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NEET levelSingle correct optionDifficulty 1 of 3bn007

What is the oxidation number of oxygen in potassium superoxide, $KO X_{2}$ (K is $+ 1$ )?

A $- \frac{1}{3}$
B $- 1$
C $- 2$
D $- \frac{1}{2}$

Answer: D

The two O atoms must total

- 1

, so each O is

- \frac{1}{2}

. This is the superoxide ion

O X_{2} X^{-}

.

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