With respect to hypochlorite, chlorate and perchlorate ions…

Maths JEE - Advanced Previous Year Paper JEE-Advanced-2020-Paper-1 Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 11, 2026

With respect to hypochlorite, chlorate and perchlorate ions, choose correct statement(s).

The hypochlorite ion is strongest conjugate base

The molecular shape of only chlorate ion is influenced by the lone pair of electrons of Cl

The hypochlorite and chlorate ions disproportionate to give rise to identical set of ions

The hypochlorite ion oxidizes the sulfite ion

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The correct answer is:

CHECK THE SOLUTION.

(a, b, d)

HClO < HClO 3 < HClO 4 (increasing acidic character)

So, ClO- is the strongest conjugate base.

Only Cl – O - and has lone pair of electrons on Cl-atom. But Cl – O - is always linear ion as it is diatomic, so, no effect of lone pair on shape but in ClO 3 due the lone pair on Cl shape becomes pyramidal.

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