First slide

Boronsted-Lowry theory

Question

Of the given anions, the strongest Bronsted base is

Easy

A

ClO^-
B

ClO₃^-
C

ClO₂^-
D

ClO₄^-

Solution

Bronsted bases are proton acceptors. As the delocalisation of negative charge decreases stability of conjugate base decreases, hence electron donation ability increases, that is basic streangth increases.
Acidic strength : HClO < HClO₂ < HClO₃ < HClO₄
Basic strength : ClO¯ > ClO₂¯ > ClO₃¯ > ClO₄¯

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