Question

The Oxidation state of Mn in $K_{2}Mn{O}_4$ is

• A. +2
• B. +7
• C. -2
• D. +6

Answer 1

The correct option is D

+6

Oxidation state of oxygen= -2
Oxidation state of potassium =+2

$K_{2}Mn{O}_4\Rightarrow 2\left(1\right)+n-2\left(4\right)=0$
n= 8-2= +6

So, the oxidation state of Mn is +6.