The species that undergoes disproportionational is an alkaline medium are

Options

A. `Cl_(2)`
B. `MnO_(4)^(2-)`
C. `NO_(2)`
D. `ClO_(4)^(-)`

Answer

A, B, C

Explanation

`MnO_(4)^(2-) , Cl_(2) and NO_(2)` undergoes disproportionation, oxidation and reduction simultaneously take place in the alkaline medium.
`Cl_(2)+2NaOH rarr NaCl +NaOCl +H_(2)O`
`2NO_(2)+2NaOH rarr NaNO_(2)+NaNO_(3)+H_(2)O`
`MnO_(4)^(2-)` is stable in strong alkali solution and disproportionates into `MnO_(4)^(-)` and `MnO_(2)` is less basic, Acidic and Neutral medium.