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Friday, 9 October

NEET UG 2017 · Chemistry · Question 79

NEET 2017 Chemistry, question 79

Question 79 of the NEET 2017 paper (code A) is a Chemistry question from Chemical Bonding and Molecular Structure. Its idea, Bond Order from MO Configuration, was asked twice, in 2017 and 2018, across NEET 2017–2026. The CBSE official answer key gives option 3.

Updated 2026-10-08

Q79 · Chemistry

Which one of the following pairs of species have the same bond order ?

  1. 1CO, NO
  2. 2O2\mathrm{O_2}, NO+\mathrm{NO^+}
  3. 3CN−\mathrm{CN^-}, COOfficial answer
  4. 4N2\mathrm{N_2}, O2−\mathrm{O_2^-}

Official answer: option 3 · CBSE official answer key

Same idea

Bond Order from MO Configuration, in other papers

NEET asked this idea twice, in 2017 and 2018. The other question below.

  • 2018 Q87Consider the following species : CN+\mathrm{CN^+}, CN−\mathrm{CN^-}, NO and CN Which one of these will have the highest bond order ?One-line MCQ · Medium

Bond Order from MO Configuration: every question and how it was framed

The chapter

Chemical Bonding and Molecular Structure in ten years of NEET

24 questions from 2017–2026, asked in 10 of 10 papers, about 2.3 a paper. Molecular Orbital Theory alone had 8.

Chapter analysisStudy this chapterPractise this chapter

Chemical Bonding and Molecular Structure: questions per paper

0243’172’181’192’203’212’222’234’242’253’26