Question

In the compounds $KMn{O}_4$ and $K_{2}C{r}_2{O}_7$ the highest oxidation state is of the element :

• A. Potassium
• B. Manganese
• C. Chromium
• D. Oxygen

Answer 1

Answer: (B)

In $KMn{O}_4,K$ is in $+1$ oxidation state, $O$ is in $-2$ oxidation state $Mn$ is present in $+7$ oxidation state. In $K_{2}C{r}_2{O}_7,K$ is in $+1$ oxidation state, $O$ is in $-2$ oxidation state Cr is present in $+6$ oxidation state. So $Mn$ is present in highest oxidation state.