JEE Main 2023Chemistryp Block Elements (Group 13 & 14)EasyMCQ

JEE Main 2023 — p Block Elements (Group 13 & 14) Question with Solution

JEE Main 2023 (01 Feb Shift 2)

Question

The correct order of bond enthalpy (kJ mol–1) is:

Choose an option

Show full solutionCorrect option: D
Correct answer
DC-C>Si-Si>Ge-Ge>Sn-Sn

Step-by-step explanation

As bond length increases, bond energy decreases.

Bond Bond energy (kJ mol-1)
C - C 348
Si - Si 297
Ge - Ge 260
Sn - Sn 240

So, bond enthalpy order C - C > Si - Si > Ge - Ge > Sn - Sn

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About this question

This is a previous-year question from JEE Main 2023, covering the p Block Elements (Group 13 & 14) 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.