Oxidation, reduction and redox equations

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Question 1
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Which of these oxidation states is correct?

Oxygen in H2O2\text{H}_2\text{O}_2H2​O2​ is −2-2−2

Nitrogen in N2\text{N}_2N2​ is −3-3−3

Hydrogen in LiH\text{LiH}LiH is −1-1−1

Manganese in KMnO4\text{KMnO}_4KMnO4​ is +6+6+6

Oxidation, reduction and redox equations Questions

  1. A Level
  2. /Chemistry
  3. /Oxidation, reduction and redox equations