Question

Which one of the following species is stable in aqueous solution ?

• A. $C{r}^{2+}$
• B. $C{u}^{+}$
• C. $Mn{O}_4^{3-}$
• D. $Mn{O}_4^{2-}$

Answer 1

Answer: (D)

In $Mn{O}_4^{2-}$ manganese is in +6 oxidation state which is having highest stability