Question

Which compound amongst the following has the highest oxidation number of $Mn$?

• A. $KMn{O}_4$
• B. $K_{2}Mn{O}_4$
• C. $Mn{O}_2$
• D. $M{n}_2{O}_3$

Answer 1

Answer: (A)

$KMn{O}_4\to +1+x-8=0\Rightarrow x=+7$
$K_{2}Mn{O}_4\to +2+x-8=0\Rightarrow x=+6$
$Mn{O}_2\to x-4=0\Rightarrow x=+4$
$M{n}_2{O}_3\to 2x-6=0\Rightarrow x=+3$