JEE Main 2021ChemistryChemical Bonding and Molecular StructureMediumMCQ

JEE Main 2021 — Chemical Bonding and Molecular Structure Question with Solution

JEE Main 2021 (25 Jul Shift 2)

Question

In the following the correct bond order sequence is:

Choose an option

Show full solutionCorrect option: C
Correct answer
CO2+>O2>O2->O22-

Step-by-step explanation

O2(16 electrons)

σ1s2,σ1s*2,σ2s2,σ2s*2,σ2p22

π2px2=π2py2,π2px*1=π2py*1,σ2pz*

Bond order of O2⇒2
Bond order of O2-⇒1.5
Bond order of O22-⇒1
Bond order of O2+⇒2.5

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About this question

This is a previous-year question from JEE Main 2021, 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.