CN  ChemNexa

Coordination Compounds NEET MCQs & Revision | ChemNexa

Attempt Coordination Compounds MCQs for NEET with answer explanations, topic-wise revision and practice sets tailored to common NEET question formats.

Register Free for Full Chemistry Practice

Coordination Compounds Revision Guide for NEET Chemistry

Coordination Compounds combines nomenclature, bonding, geometry, isomerism and magnetic behaviour. The chapter becomes much easier when oxidation state, coordination number and ligand type are identified before attempting the rest of a problem.

For NEET Chemistry, practise IUPAC naming, Werner concepts, isomerism, crystal field splitting, spin state and magnetic moment.

Important Topics

  • Ligands and coordination number
  • IUPAC nomenclature
  • Oxidation state and effective atomic number concepts
  • Structural and stereoisomerism
  • Crystal field splitting
  • Magnetic behaviour and colour

Important Formulae & Relationships

  • Magnetic moment μ = √(n(n+2)) BM
  • Oxidation state + ligand charges = charge on complex

Use formulas only after checking the required units, sign convention and assumptions for the question.

What to practise in Coordination Compounds

Concept Revision

Revise definitions, principles, equations, trends and core ideas from Coordination Compounds before attempting MCQs.

Exam-style MCQs

Use chapter-focused multiple-choice practice to improve accuracy, recall and application for NEET Chemistry.

Performance Practice

Attempt ChemNexa tests, review results and return to weak areas for another round of targeted revision.

Top 18 Coordination Compounds MCQs with Answers

These public questions are selected from the exact Coordination Compounds chapter, screened for topic relevance and deduplicated so repeated versions of the same MCQ are not shown publicly. Use them for quick revision, then sign in to attempt the complete test experience with more questions, results and performance review.

NEET Chemistry · Coordination Compounds · Very Hard

1. The coordination number of Co in

  • A. 4
  • B. 2
  • C. 6
  • D. 3
Answer: C
Explanation: Six NH3 ligands are directly bonded to Co.

NEET Chemistry · Coordination Compounds · Very Hard

2. Which pair shows linkage isomerism?

  • A. Hydrate isomers
  • B. Nitro and nitrito complexes
  • C. cis and trans Pt complexes
  • D. Optical enantiomers
Answer: B
Explanation: Ambidentate ligands can coordinate through different donor atoms.

NEET Chemistry · Coordination Compounds · Very Hard

3. Primary valency in Werner's theory corresponds to:

  • A. Magnetic moment
  • B. Oxidation state
  • C. Coordination number
  • D. Ligand denticity
Answer: B
Explanation: Primary valency is ionisable and equals oxidation state.

NEET Chemistry · Coordination Compounds · Very Hard

4. Secondary valency in Werner's theory corresponds to:

  • A. Coordination number
  • B. Oxidation state
  • C. Charge on ligand
  • D. Number of counter-ions
Answer: A
Explanation: Secondary valency is non-ionisable and equals coordination number.

NEET Chemistry · Coordination Compounds · Very Hard

5. Which is a strong-field ligand?

  • A. CN−
  • B. F−
  • C. Cl−
  • D. I−
Answer: A
Explanation: CN− produces large crystal-field splitting.

NEET Chemistry · Coordination Compounds · Very Hard

6. Which is a weak-field ligand?

  • A. CN−
  • B. CO
  • C. NO2−
  • D. I−
Answer: D
Explanation: I− lies near the weak-field end of the spectrochemical series.

NEET Chemistry · Coordination Compounds · Very Hard

7. Which octahedral type can show fac-mer isomerism?

  • A. [MA3B3]
  • B. [MA6]
  • C. [MAB5] only
  • D. [M(AA)3]
Answer: A
Explanation: Three identical ligands may occupy one face or a meridian.

NEET Chemistry · Coordination Compounds · Very Hard

8. The oxidation state of Fe in

  • A. 0
  • B. +2
  • C. +3
  • D. +4
Answer: B
Explanation: x + 6(−1) = −4, so x = +2.

NEET Chemistry · Coordination Compounds · Very Hard

9. Which ligand is bidentate?

  • A. Ethylenediamine
  • B. NH3
  • C. H2O
  • D. Cl−
Answer: A
Explanation: Ethylenediamine has two nitrogen donor atoms.

NEET Chemistry · Coordination Compounds · Very Hard

10. Which ligand is hexadentate?

  • A. Oxalate
  • B. NH3
  • C. CN−
  • D. EDTA4−
Answer: D
Explanation: EDTA can coordinate through six donor atoms.

NEET Chemistry · Coordination Compounds · Very Hard

11. Which ligand is ambidentate?

  • A. H2O
  • B. en
  • C. NO2−
  • D. NH3
Answer: C
Explanation: NO2− can bind through N or O.

NEET Chemistry · Coordination Compounds · Very Hard

12. Which pair shows geometrical isomerism?

  • A. cis- and trans-[Pt(NH3)2Cl2]
  • B. Nitro and nitrito complexes
  • C. Ionisation isomers
  • D. Hydrate isomers
Answer: A
Explanation: Square-planar MA2B2 complexes can have cis and trans forms.

NEET Chemistry · Coordination Compounds · Very Hard

13. Which complex can show optical isomerism?

  • A. [Ni(CO)4]
  • B. [Co(NH3)6]3+
  • C. [PtCl4]2−
  • D. [Co(en)3]3+
Answer: D
Explanation: [Co(en)3]3+ has Δ and Λ enantiomers.

NEET Chemistry · Coordination Compounds · Very Hard

14. In an octahedral field, the lower d-orbital set is:

  • A. eg
  • B. e
  • C. t2
  • D. t2g
Answer: D
Explanation: dxy, dxz and dyz form the lower t2g set.

NEET Chemistry · Coordination Compounds · Very Hard

15. In a tetrahedral field, the lower d-orbital set is:

  • A. eg
  • B. t2g
  • C. e
  • D. t2
Answer: C
Explanation: dz2 and dx2−y2 form the lower e set.

NEET Chemistry · Coordination Compounds · Very Hard

16. The approximate relation between Δt and Δo is:

  • A. Δt = 2Δo
  • B. Δt = 4Δo/9
  • C. Δt = 9Δo/4
  • D. Δt = Δo
Answer: B
Explanation: Tetrahedral splitting is about four-ninths of octahedral splitting.

NEET Chemistry · Coordination Compounds · Very Hard

17. The chelate effect enhances stability for complexes containing:

  • A. Only anionic ligands
  • B. Only neutral ligands
  • C. Multidentate ligands
  • D. Only monodentate ligands
Answer: C
Explanation: Chelate-ring formation and entropy favour multidentate complexes.

NEET Chemistry · Coordination Compounds · Very Hard

18. Ionisation isomerism is illustrated by:

  • A. Optical enantiomers
  • B. [Co(NH3)5SO4]Br and [Co(NH3)5Br]SO4
  • C. cis/trans Pt complexes
  • D. Nitro/nitrito complexes
Answer: B
Explanation: A coordinated ion and counter-ion exchange positions.

Login to Start Full Test

Coordination Compounds Practice Tests

Coordination Compounds Frequently Asked Questions

What should I identify first in a coordination complex?

Find the overall charge, ligand charges, oxidation state of the metal and coordination number. These determine many later steps.

How should I learn coordination nomenclature?

Apply the naming order consistently: ligands first, metal second, oxidation state in Roman numerals, and special metal endings for anionic complexes.

Why are unpaired electrons important?

The number of unpaired electrons determines magnetic behaviour and is closely related to crystal-field splitting and high-spin or low-spin configurations.

Continue with another chapter to build connected concepts and strengthen your overall Chemistry preparation.

Continue NEET Chemistry

View all NEET chapters and testsBrowse all Chemistry PracticeCreate a free account