Question

Which of the following do not show disproportionation reaction? $ClO _{4}^{-}, F _{2}, Cl _{2}, ClO _{2}^{-}, ClO _{2}^{-}, P _{4}, S _{8}$, and $ClO ^{-}$

• A. $ClO _{2}^{-}, ClO _{4}^{-}$, and $ClO ^{-}$
• B. $F _{2}$ only
• C. $F _{2}$ and $ClO _{4}^{-}$
• D. $ClO _{4}^{-}$only

Answer 1

Answer: (C)

$F _{2}$ being most electronegative element cannot exhibit any positive oxidation state.
In $ClO _{4}^{-}$chlorine is present in its highest oxidation state i.e.
$+7$. Therefore, it does not show disproportionation reaction.