Of the given anions, the strongest Bronsted base is

Options

A. `CIO^(Theta)`
B. `CIO_(2)^(Theta)`
C. `CIO_(3)^(Theta)`
D. `CIO_(4)^(Theta)`

Answer

A

Explanation

Stronger is the acid, weaker is the conjugate base and vice versa.
`{:(Base,,Acid),(CIO^(Theta),,HCIO),(CIO_(2)^(Theta),,HCIO_(2)),(CIO_(3)^(Theta),,HCIO_(3)),(CIO_(4)^(Theta),,HCIO_(4)):}`
Acidic order: `HCIO_(4) gt HCIO_(3) gt HCIO_(2) gt HCIO`
Conjugate base order: `CIO_(4)^(Theta) lt CIO_(3)^(Theta) lt CIO_(2)^(Theta) lt CIO^(Theta)`
`:.` Strongest base `=CIO^(Theta)`