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Chemistry - Coordination Compounds

Practise 373 JEE Main previous year questions on Coordination Compounds, compiled from papers spanning 2002 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty JEE Main tests.

Coordination Compounds has been asked in 25 of the 25 years of JEE Main papers analysed (2002–2026), with 373 questions in all. 28% of them were easy, 53% moderate and 19% tough. Most of its questions came from 2023, with 53 questions that year. In the last three years (2024–2026) it had 100 questions across 49 papers, about 2 per paper.

The chapter's 7 topics are not weighted equally: Werner's theory and Valence Bond Theory (117 questions, 31%), Crystal Field Theory (103 questions, 28%), and Terminology of coordination compounds (65 questions, 17%) have been asked the most. Werner's theory and Valence Bond Theory has also led over the last five years, with 75 questions. Crystal Field Theory has produced the most tough questions (26).

  1. 1Number of paramagnetic complexes among the following is ________. , , , , , , , , ,08 Apr, 2026 (E)Werner's theory and Valence Bond Theory
  2. 2Match the LIST-I with LIST-II List-I Electronic configuration of tetrahedral metal ion List-II Crystal Field Stabilization Energy ( ) A. I. 06 Apr, 2026 (M)Crystal Field Theory
  3. 3Which of the following are true about the energy of the given d-orbitals of a tetrahedral complex? A. B. C. D. $d_{x^2-y^2} = d_{z^2} Choose06 Apr, 2026 (M)Crystal Field Theory
  4. 4Which of the following sequences of hybridisation, geometry and magnetic nature are correct for the given coordination compounds ? A. sp , t06 Apr, 2026 (E)Werner's theory and Valence Bond Theory
  5. 5An excess of AgNO is added to mL of a M solution of tetraaquadichloridochromium (III) chloride. The number of moles of AgCl precipitated wil06 Apr, 2026 (E)Terminology of coordination compounds
  6. 6The correct statements about metal carbonyls are A. The metal-carbon bonds in metal carbonyls possess both and -character. B. Due to synergi05 Apr, 2026 (M)Crystal Field Theory
  7. 7Given below are two statements: Statement I: Each electron in orbitals destabilizes the orbitals by and each electron in the orbitals stabil05 Apr, 2026 (M)Crystal Field Theory
  8. 8Identify the correct statements from the following A. is the most stable complex among , and B. The stability of is greater than that of C. 05 Apr, 2026 (E)Terminology of coordination compounds
  9. 9The total number of unpaired electrons present in the , (low spin), (high spin), (high spin) and (low spin) octahedral complex systems is __05 Apr, 2026 (E)Crystal Field Theory
  10. 10Match the LIST-I with LIST-II List-I Complex ion List-II Calculated spin only magnetic moment (BM) A. I. B. II. C. III. D. IV. Choose the co04 Apr, 2026 (M)Werner's theory and Valence Bond Theory
  11. 11Consider the metal complexes (A), (B) and (C). Choose the CORRECT option by considering the number of unpaired electrons present in (A), (B)04 Apr, 2026 (E)Werner's theory and Valence Bond Theory
  12. 12Match List - I with List - II. List - I Chromium (III) Complexes (en = ethylene diamine) List - II (cm ) A. I. B. II. C. III. D. IV. Choose 02 Apr, 2026 (M)Crystal Field Theory
  13. 13g of , which is a electrolyte, is dissolved in water and is passed through a cation exchanger. The chloride ions in the eluted solution, on 02 Apr, 2026 (M)Werner's theory and Valence Bond Theory
  14. 14Which of the following complexes will show coordination isomerism? A. B. C. D. E. Choose the correct answer from the options given below:02 Apr, 2026 (E)Isomerism of coordination compounds
  15. 15The correct statement among the following is:28 Jan, 2026 (M)Werner's theory and Valence Bond Theory
  16. 16X is the number of geometrical isomers exhibited by . Y is the number of optically inactive isomer(s) exhibited by Z is the number of geomet28 Jan, 2026 (M)Isomerism of coordination compounds
  17. 17The correct increasing order of spin-only magnetic moment values of the complex ions and is :28 Jan, 2026 (E)Werner's theory and Valence Bond Theory
  18. 18The number of isoelectronic species among and is ' . If ' moles of AgCl is formed during the reaction of complex with formula with excess of28 Jan, 2026 (E)Crystal Field Theory
  19. 19Given below are two statements: Statement I : Hybridisation, shape and spin only magnetic moment of is , octahedral and 4.9 BM respectively.24 Jan, 2026 (M)Werner's theory and Valence Bond Theory
  20. 20Given below are two statements: Statement I : The number of paramagnetic species among , and is 3. Statement II : $ {K}_{4} [ {Fe}( {CN})_{624 Jan, 2026 (M)Werner's theory and Valence Bond Theory
  21. 21Consider a mixture ' X ' which is made by dissolving 0.4 mol of and 0.4 mol of in water to make 4 L of solution. When 2 L of mixture ' X ' i24 Jan, 2026 (M)Isomerism of coordination compounds
  22. 22The wavelength of light absorbed for the following complexes are in the order \( { {(I)}}{ [ {Co} ( {NH}_3 )_6 ]^{3+}} ; { {(II)}}{ [ {Co} (24 Jan, 2026 (E)Crystal Field Theory
  23. 23A chromium complex with a formula has a spin only magnetic moment value of 3.87 BM and its solution conductivity corresponds to electrolyte.24 Jan, 2026 (E)Werner's theory and Valence Bond Theory
  24. 24Given below are two statements : Statement I : ion will absorb light of lower energy than ion. Statement II : In ion, the energy separation 23 Jan, 2026 (M)Crystal Field Theory
  25. 25The statements that are incorrect about the nickel(II) complex of dimethylglyoxime are : A. It is red in colour. B. It has a high solubility23 Jan, 2026 (M)Werner's theory and Valence Bond Theory
  26. 26The crystal field splitting energy of complex is ' times that of the complex. Here ' is . (Assume )23 Jan, 2026 (M)Crystal Field Theory
  27. 27Identify the CORRECT set of details from the following: A. : Inner orbital complex; hybridized B. : Outer orbital complex; hybridized C. : O23 Jan, 2026 (E)Werner's theory and Valence Bond Theory
  28. 28Total number of unpaired electrons present in the central metal atoms/ions of and is .23 Jan, 2026 (E)Werner's theory and Valence Bond Theory
  29. 29Consider the transition metal ions and and all form low spin octahedral complexes. The correct decreasing order of unpaired electrons in the22 Jan, 2026 (M)Crystal Field Theory
  30. 30is a paramagnetic complex. Identify the INCORRECT statements about this complex. A. The complex exhibits geometrical isomerism. B. The compl22 Jan, 2026 (E)Crystal Field Theory
  31. 31Given below are two statements : Statement I : Among and , has the maximum number of unpaired electrons. Statement II : The number of pairs 21 Jan, 2026 (M)Werner's theory and Valence Bond Theory
  32. 32Given below are two statements : Statement I : Crystal Field Stabilization Energy (CFSE) of is greater than that of . Statement II : Potassi21 Jan, 2026 (E)Crystal Field Theory
  33. 33Identify the metal ions among and having a spin-only magnetic moment value more than 3.0 BM. The sum of unpaired electrons present in the hi21 Jan, 2026 (E)Crystal Field Theory
  34. 34Given below are two statements : Statement I : A homolepitc octahedral complex, formed using monodentate ligands, will not show stereoisomer08 Apr, 2025 (E)Terminology of coordination compounds
  35. 35Preview not available - open to view this question.08 Apr, 2025 (E)Werner's theory and Valence Bond Theory
  36. 36Match the LIST-I with LIST-II Choose the correct answer from the options given below :08 Apr, 2025 (E)Werner's theory and Valence Bond Theory
  37. 37An octahedral complex having molecular composition Co. has two isomers A and B. The solution of A gives a white precipitate with solution an07 Apr, 2025 (M)Isomerism of coordination compounds
  38. 38The number of paramagnetic complex among , and , which involved hybridization is ____07 Apr, 2025 (M)Werner's theory and Valence Bond Theory
  39. 39Match List-I with List-II Choose the correct answer from the options given below :07 Apr, 2025 (E)Terminology of coordination compounds
  40. 40The number of unpaired electrons responsible for the paramagnetic nature of the following complex species are respectively:07 Apr, 2025 (E)Werner's theory and Valence Bond Theory
  41. 41The number of paramagnetic metal complex species among , and with same number of unpaired electrons is ________.07 Apr, 2025 (E)Werner's theory and Valence Bond Theory
  42. 42Number of stereoisomers possible for the complexes, and are respectively ( pyridine, oxalate)04 Apr, 2025 (M)Isomerism of coordination compounds
  43. 43Which one of the following complexes will have and B.M.?04 Apr, 2025 (M)Werner's theory and Valence Bond Theory
  44. 44The correct order of and complex species based on the number of unpaired electrons present is :04 Apr, 2025 (E)Crystal Field Theory
  45. 45' ' is the number of electrons in orbitals of the most stable complex ion among , and . The nature of oxide of vanadium of the type is:04 Apr, 2025 (E)Crystal Field Theory
  46. 46The number of optical isomers exhibited by the iron complex (A) obtained from the following reaction is ________03 Apr, 2025 (M)Isomerism of coordination compounds
  47. 47Match the LIST-I with LIST-II Choose the correct answer from the options given below :03 Apr, 2025 (M)Werner's theory and Valence Bond Theory
  48. 48The correct order of the complexes (A), (B), and in terms wavelength of light absorbed is :03 Apr, 2025 (M)Crystal Field Theory
  49. 49Identify the diamagnetic octahedral complex ions from below ; A. B. C. D. Choose the correct answer from the options given below :03 Apr, 2025 (E)Crystal Field Theory
  50. 50Given below are two statements : Statement (I) : In octahedral complexes, when \( _{ {o}} {P}\) high spin complexes are formed. When \( _{ {02 Apr, 2025 (M)Crystal Field Theory

Frequently Asked Questions

1.How many questions are available for Coordination Compounds?

This chapter includes 373 questions compiled from JEE Main papers spanning 2002 to 2026.

2.Are these questions only from JEE Main, or from other exams too?

These are JEE Main questions specifically for the Coordination Compounds chapter. Questions from other exams like NTA Abhyas (JEE Main) or JEE Advanced are organised separately under their respective exam sections.

3.Is Coordination Compounds an important chapter for JEE Main Chemistry?

Coordination Compounds has appeared in 25 of the 25 years of JEE Main papers covered here, with 373 questions across 197 papers - about 2 per paper it appears in.

4.What is the difficulty level of Coordination Compounds questions in JEE Main?

Of the 373 questions analysed for this chapter, 28% are easy, 53% moderate and 19% tough. 2023 had the most, with 53 questions.

5.Which topics in Coordination Compounds should I focus on?

These topics have carried the most weightage in Coordination Compounds:

  • Werner's theory and Valence Bond Theory - 117 questions (31%)
  • Crystal Field Theory - 103 questions (28%)
  • Terminology of coordination compounds - 65 questions (17%)
  • Crystal Field Theory has produced the most tough questions (26).
6.Is Coordination Compounds's weightage in JEE Main going up or down?

Across all 197 papers analysed, Coordination Compounds has averaged about 1.9 questions per paper. In the last three years (2024–2026), that average has stayed about the same, at about 2.0 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.