jee_main_2025_07_april_evening - Coordination Compounds Topics

Master these core formulas and structures to solve almost any past paper question.

Sample Questions in this Chapter

QUESTION #35 Valency and Oxidation State
'X' is the number of acidic oxides among VO₂, V₂O₃, CrO₃, V₂O₅ and Mn₂O₇. [cite: 307, 316] The primary valency of cobalt in [Co(H₂NCH₂CH₂NH₂)₃]₂(SO₄)₃ is Y. The value of X + Y is:
Start Practice →
QUESTION #37 Werner's Theory
Match List-I with List-II
List-I (Complex) List-II (Primary valency and Secondary valency) (A) [Co(en)₂Cl₂]Cl(I) 3      6 (B) [Pt(NH₃)₂Cl(NO₂)](II) 3      4 (C) Hg[Co(SCN)₄](III) 2      6 (D) [Mg(EDTA)]²⁻(IV) 2      4 Choose the correct answer from the options given below:
QUESTION #40 Magnetic Properties and Crystal Field Theory
The number of unpaired electrons responsible for the paramagnetic nature of the following complex species are respectively: [Fe(CN)6]³⁻, [FeF6]³⁻, [CoF6]³⁻, [Mn(CN)6]³⁻
QUESTION #49 Magnetic Properties and Crystal Field Theory
The number of paramagnetic metal complex species among [Co(NH₃)₆]³⁺, [Co(C₂O₄)₃]³⁻, [MnCl₆]³⁻, [Mn(CN)₆]³⁻, [CoF₆]³⁻, [Fe(CN)₆]³⁻ and [FeF₆]³⁻ with same number of unpaired electrons is .
Rankbit System
JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%) | JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%)

Select Your Target Exam

Choose an exam track below to find formulas per chapter and patterns.

Syncing Exam Intelligence

Mapping formulas and patterns across all tracks…

PATH A — FULL LENGTH PRACTICE

Full Mock Test Hub

Simulate real NTA exam conditions with fully tracked mocks. Time yourself against past papers.

Now Live Open
PATH B — TARGETED PRACTICE

Topic-wise Practice Hub

Practice past-year questions one chapter at a time. Pick an exam → subject → chapter and get every PYQ for that topic — pulled together from all past papers — with the chapter's key formulas alongside.

Loading Questions... Browse Topics

Exam Analysis Tools

Chapter weightage trends and topic-wise practice — all mapped from past shift papers.

Year-wise PYQ

Chapter Weightage & Trends

See high-yield chapters, year-wise counts and the frequency-based chance each topic repeats next exam.

Weightage Board Open
Targeted PYQs

Topic-wise Practice Hub

Every past-year question for a chapter pulled from all papers, with its key formulas alongside.

One chapter at a time Open
Latest from the Blog
View all →

Loading articles...