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Coordination Compounds

Previous year questions with solutions · 2019 – 2026

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8Questions
6Papers covered
5.88% ↓5.9%Weightage in 2026
’24
’25
’26
Year-wise statistics questions · papers · average per paper · weightage
YearQuestionsPapersAvg / paperWeightage
20262215.88% ↓5.9%
20252216.25% ↓46.9%
202442211.76%

2 questions · newest paper first

1

The correct order of the wavelength maxima of the absorption band in the ultraviolet-visible region for the given complexes is

  1. [Co(CN)6]3- < [Co(NH3)6]3+ < [Co(NH3)5(H2O)]3+ < [Co(NH3)5(Cl)]2+
  2. [Co(NH3)5(Cl)]2+ < [Co(NH3)5(H2O)]3+ < [Co(NH3)6]3+ < [Co(CN)6]3-
  3. [Co(CN)6]3- < [Co(NH3)5(Cl)]2+ < [Co(NH3)5(H2O)]3+ < [Co(NH3)6]3+
  4. [Co(NH3)6]3+ < [Co(CN)6]3- < [Co(NH3)5(Cl)]2+ < [Co(NH3)5(H2O)]3+
JEE Advanced 2025 Paper 1
2

The sum of the spin only magnetic moment values (in B.M.) of [Mn(Br)6]3- and [Mn(CN)6]3- is .

JEE Advanced 2025 Paper 2