What is the oxidation state of oxygen in $\mathrm{O}_2^{2-}$ ion?

What is the oxidation state of oxygen in $\mathrm{O}_2^{2-}$ ion?
  1. $+2$
  2. $+1$
  3. $-2$
  4. $-1$

Solution

$\mathrm{O}_2^{-2}$ let O.S. of oxygen is $\mathrm{x}$ $2 x=-2$ $x=-1$

Asked in: MHT CET 2022 (06 Aug Shift 2)

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