Solveeit Logo
Login

Question

Question: The number of electrons involved in the conversion of \(MnO_{4}^{-}\) to \(MnO_{2}\)is....

The number of electrons involved in the conversion of MnO4−MnO_{4}^{-} to MnO2MnO_{2}is.

A

3

B

4

C

1

D

2

Answer

3

Explanation

Solution

: MnO4−→MnO2MnO_{4}^{-} \rightarrow MnO_{2}

Oxidation number of MnO4−:x−8=−1⇒x=+7MnO_{4}^{-}:x - 8 = - 1 \Rightarrow x = + 7

Oxidation number of MnO2:x−4=0⇒x=+4MnO_{2}:x - 4 = 0 \Rightarrow x = + 4

Change in oxidation number = 3