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Friday, 9 October

JEE Main Chemistry · Chemical Bonding and Molecular Structure

Isoelectronic and Isostructural Principle

Isoelectronic and Isostructural Principle (Chemical Bonding and Molecular Structure) was asked once in the 42 JEE Main shifts Lumi analysed, in 2026.

Times asked
1
in 1 shift
Years
2026
Usual format
Single correct
Conceptual
Pattern
New since 2024
asked once so far

How it is asked

  • Odd-one-out among species pairs

Difficulty

Easy 0Medium 1Hard 0

Where it sits

Chapter: Chemical Bonding and Molecular Structure. Topic: VSEPR Theory, 28 questions over 15 ideas.

Other repeat ideas in this topic

Every time it came

The question

Newest first, each with its options and official answer.

  1. 6 Apr 2026, Shift 1 · Q54The pairs among A=[SO32−,CO32−]\mathrm{A}=\left[\mathrm{SO_3^{2-},CO_3^{2-}}\right], B=[O22−,F2]\mathrm{B}=\left[\mathrm{O_2^{2-},F_2}\right],…MediumSingle correct