What is the oxidation number of manganese in potassium manganate(VII), KMnO?

Answer and explanation

Correct answer: C. +7

  1. Step 1: K is +1 and each O is , so . Step 2. . Answer: +7. Why not the others: +2 is manganese in the Mn ion formed in titrations, +4 is manganese in MnO, and +6 is manganese in the manganate(VI) ion.

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