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JEE Main Coordination Compounds questions with solutions

Nomenclature, isomerism, bonding theories and magnetic properties of complexes. 18 questions from our 2016–2025 JEE Main pattern papers, from the Class 12 Chemistry syllabus. Each has the answer and a full solution.

Also practise: Coordination Compounds for JEE Advanced

JEE Main 2025

The complex ion [Co(en)2(NO2)Cl]^+ (en = ethane-1,2-diamine; NO2^- can bind through N or through O) can exist as a total of how many stereoisomers…JEE Main 2025 · hard
The sum of the number of unpaired electrons in the complexes [Fe(CN)6]^3-, [CoF6]^3-, [Ni(NH3)6]^2+ and [MnCl4]^2- isJEE Main 2025 · medium

JEE Main 2024

JEE Main 2023

JEE Main 2022

JEE Main 2021

JEE Main 2020

The correct increasing order of spin-only magnetic moment of [Fe(CN)6]^4-, [Mn(CN)6]^3-, [Cr(H2O)6]^3+ and [Fe(H2O)6]^2+ is (CN^- is a strong-field…JEE Main 2020 · medium

JEE Main 2019

JEE Main 2018

Which pair of complex ions has the same spin-only magnetic moment?JEE Main 2018 · medium
The ratio of the crystal field stabilisation energy (in the absence of pairing energy) of high-spin tetrahedral [CoCl4]^2- to that of high-spin…JEE Main 2018 · hard

JEE Main 2017

JEE Main 2016

20 mol of a violet coordination compound of formula CoCl3·4NH3 is dissolved in water and treated with excess AgNO3, giving 28.7 g of AgCl (Ag=108…JEE Main 2016 · hard

Other Chemistry topics

Alcohols, Phenols, Ethers and Haloalkanes 16 Atomic Structure 12 Biomolecules and Polymers 14 Carbonyl Compounds, Carboxylic Acids and Amines 25 Chemical Bonding and Molecular Structure 14 Chemical Equilibrium 10 Chemical Kinetics 13 Chemical Thermodynamics 16 Electrochemistry 18 General Organic Chemistry and Isomerism 13 Hydrocarbons 16 Ionic Equilibrium 11 Mole Concept and Stoichiometry 12 Periodic Properties 9 Qualitative and Practical Chemistry 8 Redox Reactions and Titrations 9 Solutions, Solid State and Surface Chemistry 19 d- and f-Block Elements and Metallurgy 14 s-Block, p-Block Elements and Hydrogen 23