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Friday, 9 October

NEET UG 2022 · Chemistry · Question 72

NEET 2022 Chemistry, question 72

Question 72 of the NEET 2022 paper (code R1) is a Chemistry question from Chemical Bonding and Molecular Structure. Its idea, Magnetic Behaviour from MOs, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 1.

Updated 2026-10-08

Q72 · Chemistry

Which amongst the following is incorrect statement ?

  1. 1O2+\mathrm{O_2^+} ion is diamagnetic.Official answer
  2. 2The bond orders of O2+\mathrm{O_2^+}, O2\mathrm{O_2}, O2−\mathrm{O_2^-} and O22−\mathrm{O_2^{2-}} are 2.5, 2, 1.5 and 1, respectively.
  3. 3C2\mathrm{C_2} molecule has four electrons in its two degenerate π\pi molecular orbitals.
  4. 4H2+\mathrm{H_2^+} ion has one electron.

Official answer: option 1 · NTA final answer key

Same idea

The only question on Magnetic Behaviour from MOs

No other NEET paper from 2017–2026 tested this exact idea.

Magnetic Behaviour from MOs: 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