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What is the charge of Mn in MnO4- ?
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What is the charge of Mn in MnO4- ?

User Paul Bakaus
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Answer: +7

Explanation: Sum of all the oxidation numbers in a polyatomic ion is equal to the charge on the ion. Thus, the total charge on the polyatomic anion is −1. Thus, the oxidation number of Mn in MnO−4 is +7.

User Rdehuyss
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I believe it is +7 :)
User Deeksy
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