Coordination Compounds for JEE Main 2026: Chapter-wise Practice Questions with Solutions

For JEE Main 2026 aspirants, the Coordination Compounds chapter from the JEE Main Chemistry syllabus 2026 is a scoring section if studied well. The JEE Main exam generally asks a few questions based upon the fundamental concepts of coordination chemistry, such as naming, bonding, isomerism, and stability of coordination compounds. One of the best strategies to study, revise and ensure the maximum marks in JEE Main 2026 is to solve parctice questions based on Coordination Compounds. In this article, we have curated some important questions with step-by-step solutions so that students can practice and learn at the same time.
Also Check - Top 10 Scoring Topics in JEE Main 2026 Chemistry

JEE Main 2026 Coordination Compounds Practice Questions with Solutions

Some of the key solved examples of JEE Main 2026 Coordination Compounds section have been provided below.

(a) [Co(NH3)5NO2]2+[Co(NH₃)₅NO₂]^{2+}[Co(NH3​)5​NO2​]2+

(b) [Cr(NH3)6]3+[Cr(NH₃)₆]^{3+}[Cr(NH3​)6​]3+

(c) [Ni(CO)4][Ni(CO)₄][Ni(CO)4​]

Answer: (a) because NO₂⁻ can bind via N or O → nitro/nitrito forms.

Solution:

x + 2(0) + 2(–1) = 0 → x = +2.

Answer: Pt = +2.

(a) [Co(en)3]3+[Co(en)₃]^{3+}[Co(en)3​]3+

(b) [Co(NH3)6]3+[Co(NH₃)₆]^{3+}[Co(NH3​)6​]3+

(c) [CrCl2(ox)2]3−[CrCl₂(ox)₂]^{3-}[CrCl2​(ox)2​]3−

Solution: (a) and (c) show optical isomerism due to chiral geometry.

Answer: (a), (c)

Solution: It’s an octahedral complex of the type [MA₄B₂].

→ Two isomers: cis and trans.

Answer: 2 isomers.

(a) 3

(b) 4

(c) 5

(d) 6

Solution: 6 NH₃ molecules are directly bonded to Co³⁺ → coordination number = 6.

Answer: (d) 6
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JEE Main 2026 Coordination Compounds Sample Questions PDF

Why Coordination Compounds Questions are Essential in JEE Main 2026 Preparation?

• The Coordination Compounds chapter in the JEE Main exam is not just based upon theoretical concepts; they are the key to unlocking the true potential in the JEE Main exam.

• Such topics hold substantial weightage in the JEE Main exam, and comprehending them thoroughly can significantly boost your scores.

• Students learn Coordination Compounds in JEE Main as part of their preparation to master the essential concepts in Chemistry.

• This chapter provides insights into the fascinating world of complex molecules formed by the transition metals and ligands, equipping students with problem-solving skills crucial for acing the JEE Main examination.

• This chapter holds a significant importance of about 3% in the JEE Main exam. Expect direct questions from this part, making it a scoring section.

Once you have gotten into the habit of solving Coordination Compounds high yield questions for JEE Main 2026, you should top-up your exam prep with by taking multiple mock tests on a weekly basis, to assess how far you've reached. Good luck!

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