Learn

Friday, 9 October

JEE Main Chemistry · Coordination Compounds

Spin-only Magnetic Moment

Spin-only Magnetic Moment (Coordination Compounds) was asked 9 times in 8 JEE Main shifts, 2023–2026, out of the 42 shifts Lumi analysed. 3 of the 9 had a numerical answer.

Times asked
9
in 8 shifts
Years
2023–2026
Usual format
Match the list
Application
Pattern
Comes in cycles
repeats across shifts

How it is asked

  • Match list on spin-only magnetic moments
  • Match list on complex shape and magnetic moment

Difficulty

Easy 4Medium 5Hard 0

Where it sits

Chapter: Coordination Compounds. Topic: Crystal Field Theory, 40 questions over 9 ideas.

Other repeat ideas in this topic

Every time it came

All 9 questions

Newest first, each with its options and official answer.

  1. 4 Apr 2026, Shift 1 · Q62Match the LIST-I with LIST-II List-I (Complex ion): A. [Cr(H2O)6]2+[\mathrm{Cr(H_2O)_6}]^{2+}; B. [Co(H2O)6]2+[\mathrm{Co(H_2O)_6}]^{2+}; C.…EasyMatch the list
  2. 8 Apr 2025, Shift 2 · Q60Match the LIST-I with LIST-II LIST-I (Complex/ Species) | LIST-II (Shape & magnetic moment) A. [Ni(CO)4]\mathrm{[Ni(CO)_4]} | I. Tetrahedral, 2.8…MediumMatch the list
  3. 31 Jan 2024, Shift 1 · Q86The 'Spin only' Magnetic moment for [Ni(NH3)6]2+[\mathrm{Ni(NH_3)_6}]^{2+} is _________ ×10−1\times10^{-1} BM. (given = Atomic number of Ni : 28)EasyNumerical value
  4. 31 Jan 2024, Shift 2 · Q70Select the option with correct property -MediumSingle correct
  5. 6 Apr 2023, Shift 1 · Q72Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: The spin only magnetic…MediumAssertion–reason
  6. 8 Apr 2023, Shift 2 · Q69Match List I with List II LIST I (Coordination Complex): A. [Cr(CN)6]3−[\mathrm{Cr(CN)_6}]^{3-}; B. [Fe(H2O)6]2+[\mathrm{Fe(H_2O)_6}]^{2+}; C.…MediumMatch the list
  7. 8 Apr 2023, Shift 2 · Q90The observed magnetic moment of the complex [Mn(NCS)6]x−[\mathrm{Mn(NCS)_6}]^{x-} is 6.06 BM. The numerical value of xx is ____________.MediumNumerical value
  8. 11 Apr 2023, Shift 1 · Q88The ratio of spin-only magnetic moment values…EasyNumerical value
  9. 13 Apr 2023, Shift 2 · Q70Which of the following complexes will exhibit maximum attraction to an applied magnetic field?EasySingle correct