Question

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

• A. $KMnO_{4}$
• B. $K_{2}MnO_{4}$
• C. $MnO_{2}$
• D. $Mn_{2}O_{3}$

Answer 1

Answer: (A)

$KMnO_{4}$

Answer 2

: $KMnO_{4} \rightarrow + 1 + x - 8 = 0 \Rightarrow x = + 7$

$K_{2}MnO_{4} \rightarrow + 2 + x - 8 = 0 \Rightarrow x = + 6$

$MnO_{2} \rightarrow x - 4 = 0 \Rightarrow x = + 4$

$Mn_{2}O_{3} \rightarrow 2x - 6 = 0 \Rightarrow x = + 3$