`MnO_(4)^(2-)` (`1` mole) in neutral aqueous medium is disproportionate to

Options

A. `2//3` mole of `MnO_(4)^(-)` and `1//3` mole of `MnO_(2)`
B. `1//3` mole of `MnO_(4)^(-)` and `2//3` mole of `MnO_(2)`
C. `1//3` mole of `Mn_(2)O_(7)` and `1//3` mole of `MnO_(2)`
D. `2//3` mole of `Mn_(2)O_(7)` and `1//3` mole of `MnO_(2)`

Answer

A

Explanation

`MnO_(4)^(2-)` in neutral aqueous medium is disproportionate to `(2)/(3)` mole of `MnO_(4)^(-)` and `(1)/(3)` mole of `MnO_(2)`.