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Chemistry · Oxidation and reduction

ChemistryOxidation and reductionWAEC

Find the oxidation number of manganese in KMnO₄.

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Answer: B. +7

+1 + Mn + 4(−2) = 0, so Mn = +7.

An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.

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