JEE Main 2024ChemistryChemical Bonding And Molecular StructureBond ParametersmediumMCQ

JEE Main 2024 — Chemical Bonding And Molecular Structure Question with Solution

From: JEE Main 2024 (Online) 30th January Morning Shift

Question

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : There is a considerable increase in covalent radius from to . However from As to Bi only a small increase in covalent radius is observed.

Reason (R) : Covalent and ionic radii in a particular oxidation state increases down the group. In the light of the above statements, choose the most appropriate answer from the options given below:

Choose an option

Show full solutionCorrect option: C
Correct answer
CBoth (A) and (R) are true but (R) is not the correct explanation of (A)

Step-by-step explanation

According to NCERT,

Statement-I : Factual data,

Statement-II is true.

But correct explanation is presence of completely filled and -orbitals of heavier members

Practice this on the real CBT interface

Solve this JEE Main question (and the rest of the Chemical Bonding And Molecular Structure chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.

Solve interactively →

About this question

This is a previous-year question from JEE Main 2024, covering the Chemical Bonding And Molecular Structure chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.