Reduction of the metal centre in aqueous permanganate ion involves

Options

A. 3 electrons in neutral medium
B. 5 electrons in neutral medium
C. 3 electrons in alkaline medium
D. 5 electrons in alkaline medium

Answer

A, D

Explanation

(a). In neutral medium `:overset(+7)(MnO_(4)^(ɵ))3e^(-)tooverset(+2)(Mn)O_(2)`
(c). In alkaline medium: `overset(+7)(Mn)O_(4)^(ɵ)+e^(-)tooverset(+6)(Mn)O_(4)^(2-)`
(d). In acidic medium: `overset(+7)(Mn)O_(4)^(ɵ)+5e^(-)toMn^(2+)`