Question

The maximum oxidation state shown by $Mn$ in its compound is :

• A. $+4$
• B. $+5$
• C. $+6$
• D. $+7$

Answer 1

The correct option is D $+7$

The electronic configuration of $Mn$ is:
$Mn\left(25\right)=\left[Ar\right]3d^{5}4s^2,4p^o$

In excited state, it can lose its all 7 electrons.

Hence, maximum oxidation sate exhibited by $Mn$ is $+7$ which is in $KMn{O}_4$.

The correct answer is option $D$.