Which one of the two, CIO_(2)6(-) or CIO_(4)^(-) shows disproportionation reaction and why ?

Which one of the two, CIO_(2)6(-) or CIO_(4)^(-) shows disproportionat

1.	Which one of the two, CIO_(2)6(-) or CIO_(4)^(-) shows disproportionation reaction and why ?
Answer» Solution :The oxidation state of CI in `CIO_(2)^(-)` is `+3`. So, CHLORINE can get oxidised as well as reduced and can ACT as reductant and oxidant. The disproportionation reaction of `CIO_(2)^(-)` is `overset(+1)(3CI)O_(2)^(-)to CI^(-)+overset(+5)CIO_(3)^(-)` In `CIO_(4)^(-),CI` is in its highest oxidation state, So it can only be an oxidant.