What is oxidation number of oxygen in super oxide?

What is oxidation number of oxygen in super oxide?
  1. $\mathrm{MO}_2$
  2. +1
  3. $-\frac{1}{2}$
  4. $\frac{1}{2}$

Solution

$\begin{aligned} & \mathrm{MO}_2 \\ & +1+2 \mathrm{x}=0 \\ & \mathrm{x}=-\frac{1}{2}\end{aligned}$

Asked in: MHT CET 2022 (08 Aug Shift 1)

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