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The number of electrons involved in the ...

The number of electrons involved in the conversion of `MnO_(4)^(-)` to `MnO_(2)` is

A

3

B

4

C

1

D

2

Text Solution

Verified by Experts

The correct Answer is:
A
`MnO_(4)^(-)rarr MnO_(2)`
Oxidation number of `MnO_(4)^(-) : x -8=-1 rArr x=+7`
Oxidation number of `MnO_(2):x-4=0 rArr x=+4`
Change in oxidation number = 3
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