Question

Oxidation numbers of Mn in $K_{2}Mn{O}_{4}andMnS{O}_4$ are respectively

• A. $+7,+2$
• B. $+5,+2$
• C. $+6,+2$
• D. $+2,+6$

Answer 1

Answer: (C)

$K_2\stackrel{\ast }{M}n{O}_4$
$2+x-8=0$
$x=+6$
$\stackrel{\ast }{M}nS{O}_4$
$x+6-8=0$
$x=+2.$