Which of the following is not a rule for calculating oxidat…

Chemistry Redox Reaction General Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 13, 2026

Which of the following is not a rule for calculating oxidation number?

For ions, oxidation number is equal to the charge on the ion.

The oxidation number of oxygen is -2 in all of its compounds.

the oxidation number of fluorine is – 1 in all of its compounds.

Oxidation number of hydrogen is +1 Except in binary hydrides of alkali metals and alkaline earth metals where it is -1.

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The correct answer is:

Oxidation number of oxygen is -2 in most of its compounds. The exceptions are -1 in peroxides and -1/2 in superoxides, +2 in and +1 in

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