JEE Main 2023ChemistryClassification of Elements and Periodicity in PropertiesEasyMCQ

JEE Main 2023 — Classification of Elements and Periodicity in Properties Question with Solution

JEE Main 2023 (30 Jan Shift 2)

Question

Bond dissociation energy of E-H bond of the "H2E" hydrides of group 16 elements (given below), follows order.
(A) O
(B) S
(C) Se
(D) Te

Choose an option

Show full solutionCorrect option: A
Correct answer
AA>B>C>D

Step-by-step explanation

Bond strength is inversely proportional to the bond length of E - H bond of hydrides of 16th group hydrides. The bond length increases down the group. Hence, bond dissociation enthalpy decreases down the group.

Hence, bond dissociation energy of E-H bond in hydrides of group 16 follows the order

H2O > H2 S > H2Se > H2Te.

Practice this on the real CBT interface

Solve this JEE Main question (and the rest of the Classification of Elements and Periodicity in Properties 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 2023, covering the Classification of Elements and Periodicity in Properties 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.