Of the given anions, the strongest Bronsted base is

Options

A. `ClO^(-)`
B. `CIO_(2-)`
C. `CIO_(3)^(-)`
D. `CIO_(4)^(-)`

Answer

A

Explanation

`HClO_(4)` is the strongest acid among `HClO`, `HClO_(2), HClO_(3)` and `HClO_(4)` as more the number of oxygen atoms attached, more is the acidity of the molecule order of acidity is :
`HClO lt HClO_(2) lt HClO_(3) lt HClO_(4)`
So the conjugate base order will be just the reverse :
`ClO^(-) gt ClO_(2)^(-) gt ClO_(3)^(-) gt ClO_(4)^(-)`