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Saturday, 31 October

JEE Main · Chemistry · Chemical Bonding and Molecular Structure

Magnetic Property Prediction

JEE Main asked Magnetic Property Prediction 9 times in 9 of the 108 shifts Lumi analysed, in 2017, 2020, 2021, 2022, 2023 and 2024. It belongs to Molecular Orbital Theory, in Chemical Bonding and Molecular Structure (Chemistry). The longest wait between two years asking it was 3 years, across 2018 and 2019, which Lumi has no shifts for. In 2021, 2022 and 2024 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
9
in 9 shifts
Years
6 of 8
First asked
2017
last in 2024
Pattern
Asked most years
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2017, 2020, 2021, 2022, 2023 and 2024. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.510.83’170.08’200.07’210.07’220.07’230.09’240’250’26

Raw count: 2017: 1 in 1 shift · 2020: 1 in 12 shifts · 2021: 2 in 24 shifts · 2022: 2 in 24 shifts · 2023: 1 in 12 shifts · 2024: 2 in 18 shifts · 2025: 0 in 8 shifts · 2026: 0 in 9 shifts.

Shift by shift

Each square is one analysed shift, in date order. Open a filled one for that paper.

  • 20260 of 9
  • 20250 of 8
  • 20242 of 18
  • 20231 of 12
  • 20222 of 24
  • 20212 of 24
  • 20201 of 12
  • 20171 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Numerical value is the usual form. Skill tested: application.

  • Count species with unpaired electrons
  • Odd-one-out among diatomic species by magnetism

Difficulty

Easy 2Medium 7Hard 0

5 of the 9 questions had a numerical answer.

Every question

All 9 questions

From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.

  1. 9 Apr 2024, Shift 1 · Q82The total number of species from the following in which one unpaired electron is present, is ________.…MediumNumerical value
  2. 4 Apr 2024, Shift 1 · Q82Number of molecules/species from the following having one unpaired electron is ________. O2\mathrm{O_2}, O2−1\mathrm{O_2^{-1}}, NO,…MediumNumerical value
  3. 13 Apr 2023, Shift 1 · Q62In which of the following processes, the bond order increases and paramagnetic character changes to diamagnetic one ?MediumSingle correct
  4. 28 Jul 2022, Shift 1 · Q83The number of paramagnetic species among the following is __________.…MediumNumerical value
  5. 25 Jul 2022, Shift 1 · Q81Among the following species N2, N2+, N2−, N22−, O2, O2+, O2−, O22−\mathrm{N_2,\ N_2^{+},\ N_2^{-},\ N_2^{2-},\ O_2,\ O_2^{+},\ O_2^{-},\ O_2^{2-}} the number of species…MediumNumerical value
  6. 31 Aug 2021, Shift 2 · Q54According to molecular orbital theory, the number of unpaired electron(s) in O22−\mathrm{O_2^{2-}} is __________.EasyNumerical value
  7. 4 Aug 2021, Shift 1 · Q32Consider the following species B2,C2,S2,NO,O22−\mathrm{B_2, C_2, S_2, NO, O_2^{2-}} Which set represents all paramagnetic species?MediumSingle correct
  8. 9 Jan 2020, Shift 1 · Q27If the magnetic moment of a dioxygen species is 1.73 B.M, it may be :MediumSingle correct
  9. 2 Apr 2017 (offline) · Q42Which of the following species is **not** paramagnetic ?EasySingle correct

Shifts: 2 Apr 2017 (offline), 9 Jan 2020, Shift 1, 4 Aug 2021, Shift 1, 31 Aug 2021, Shift 2, 25 Jul 2022, Shift 1, 28 Jul 2022, Shift 1, 13 Apr 2023, Shift 1, 4 Apr 2024, Shift 1, 9 Apr 2024, Shift 1.

Same topic

Other ideas in Molecular Orbital Theory

Molecular Orbital Theory has 11 ideas JEE Main has asked; 4 of them came up in more than one question.

Topic analysisChapter analysisStudy this chapterAll repeated ideas