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Question

Find the oxidation state of Mn in KMnO4?

A
-7
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B
-3
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C
0
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D
3
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E
7
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Solution

The correct option is D 7
Oxidation state of Mn in KMnO4.
Let the Mn has oxidation state to be x.
K has +1, O has -2 oxidation state.
+1+4×(2)+x = 0
x =+7

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