Easy MCQ +4 / -1 PYQ · JEE Mains 2020

Oxidation number of potassium in K2O. K2O2 and KO2 respectively is :

  1. A +1, +2 and + 4
  2. B +1, +1 and + 1 Correct answer
  3. C +2, +1 and $+ {1 \over 2}$
  4. D +1, +4, and +2

Solution

Potasisum has an oxidation of +1 (only) in combined state.

About this question

Subject: Chemistry · Chapter: Redox Reactions · Topic: Oxidation States

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