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Saturday, 31 October

JEE Main · Chemistry · Coordination Compounds

CFSE Calculation

JEE Main asked CFSE Calculation 11 times in 11 of the 108 shifts Lumi analysed, in 2020, 2021, 2022, 2023, 2025 and 2026. It belongs to Crystal Field Theory, in Coordination Compounds (Chemistry). The longest wait between two years asking it was 2 years. In 2020, 2022 and 2023 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
11
in 11 shifts
Years
6 of 8
First asked
2020
last in 2026
Pattern
Asked most years
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020, 2021, 2022, 2023, 2025 and 2026. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.20.40’170.33’200.03’210.07’220.14’230’240.13’250.11’26

Raw count: 2017: 0 in 1 shift · 2020: 4 in 12 shifts · 2021: 1 in 24 shifts · 2022: 2 in 24 shifts · 2023: 2 in 12 shifts · 2024: 0 in 18 shifts · 2025: 1 in 8 shifts · 2026: 1 in 9 shifts.

Shift by shift

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

  • 20261 of 9
  • 20251 of 8
  • 20240 of 18
  • 20232 of 12
  • 20222 of 24
  • 20211 of 24
  • 20204 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Single correct is the usual form. Skill tested: calculation.

  • Match list on cfse of tetrahedral configurations
  • Identify complex with highest cfse

Difficulty

Easy 0Medium 10Hard 1

1 of the 11 questions had a numerical answer.

Every question

All 11 questions

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

  1. 6 Apr 2026, Shift 1 · Q61Match the LIST-I with LIST-II List-I (Electronic configuration of tetrahedral metal ion) | List-II (Crystal Field Stabilization Energy…MediumMatch the list
  2. 2 Apr 2025, Shift 2 · Q60The d-orbital electronic configuration of the complex among [Co(en)3]3+\mathrm{[Co(en)_3]^{3+}}, [CoF6]3−\mathrm{[CoF_6]^{3-}},…MediumSingle correct
  3. 12 Apr 2023, Shift 1 · Q72Match List I with List II LIST I (Complex) / LIST II (CFSE (Δo\Delta_o)) A. [Cu(NH3)6]2+\mathrm{[Cu(NH_3)_6]^{2+}} - I. −0.6-0.6 B.…MediumMatch the list
  4. 10 Apr 2023, Shift 2 · Q70Match List I with List II LIST I (Complex) A. [Ti(H2O)6]2+[\mathrm{Ti(H_2O)_6}]^{2+} B. [V(H2O)6]2+[\mathrm{V(H_2O)_6}]^{2+} C. [Mn(H2O)6]3+[\mathrm{Mn(H_2O)_6}]^{3+}…MediumMatch the list
  5. 27 Jun 2022, Shift 1 · Q71Which of the following will have maximum stabilization due to crystal field ?MediumSingle correct
  6. 29 Jul 2022, Shift 1 · Q90[Fe(CN)6]3−\mathrm{[Fe(CN)_6]^{3-}} should be an inner orbital complex. Ignoring the pairing energy, the value of crystal field stabilization…MediumNumerical value
  7. 26 Aug 2021, Shift 2 · Q39Arrange the following Cobalt complexes in the order of increasing Crystal Field Stabilization Energy (CFSE) value. Complexes :…MediumSingle correct
  8. 5 Sep 2020, Shift 1 · Q38The values of the crystal field stabilization energies for a high spin d6\mathrm{d^6} metal ion in octahedral and tetrahedral fields,…MediumSingle correct
  9. 4 Sep 2020, Shift 2 · Q36The Crystal Field Stabilization Energy (CFSE) of [CoF3(H2O)3][\mathrm{CoF_3(H_2O)_3}] (Δ0<P\Delta_0 < P) is :MediumSingle correct
  10. 3 Sep 2020, Shift 1 · Q37The electronic spectrum of [Ti(H2O)6]3+\mathrm{[Ti(H_2O)_6]^{3+}} shows a single broad peak with a maximum at 20,300 cm−1\mathrm{cm^{-1}}. The crystal…MediumSingle correct
  11. 2 Sep 2020, Shift 1 · Q37Consider that a d6d^{6} metal ion (M2+\mathrm{M^{2+}}) forms a complex with aqua ligands, and the spin only magnetic moment of the complex…HardSingle correct

Shifts: 2 Sep 2020, Shift 1, 3 Sep 2020, Shift 1, 4 Sep 2020, Shift 2, 5 Sep 2020, Shift 1, 26 Aug 2021, Shift 2, 27 Jun 2022, Shift 1, 29 Jul 2022, Shift 1, 10 Apr 2023, Shift 2, 12 Apr 2023, Shift 1, 2 Apr 2025, Shift 2, 6 Apr 2026, Shift 1.

Same topic

Other ideas in Crystal Field Theory

Crystal Field Theory has 15 ideas JEE Main has asked; 8 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas