Oxidation number of potassium in K 2 O ,   K 2 O 2 and KO 2 , respectively:

Oxidation number of potassium in K2O, K2O2 and KO2, respectively:
  1. +1, +1, +1
  2. +12, +4, +1
  3. +2, +1, +12
  4. +12, +1, +2

Solution

Alkali metals always possess +1 oxidation state, whereas oxidation state for oxygen present in \(\mathrm{K}_2 \mathrm{O}\) (oxide) is -2, and in \(\mathrm{K}_2 \mathrm{O}_2\) (peroxide) is -1 and in \(\mathrm{KO}_2\) (superoxide) is \(-\frac{1}{2}\) ,

Asked in: JEE-TOPICTESTS-CHEMISTRY

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