JEE Main 2019ChemistryCoordination CompoundsHardMCQ

JEE Main 2019Coordination Compounds Question with Solution

JEE Main 2019 (10 Apr Shift 1)

Question

Three complexes,
CoClNH352+I,  CoNH35H2O3+(II) and CoNH363+III
absorb light in the visible region. The correct order of the wavelength of light absorbed by them is:

Choose an option

Show full solutionCorrect option: C
Correct answer
CI>II>III

Step-by-step explanation

On increasing strength of ligand, wavelength of absorbed radiation decreases
Strength of ligands according to spectrochemical series is: NH3>H2O>Cl-
  Order of wavelength absorbed will be Cl->H2O>NH3
  Correct order of wavelength absorbed is
I>II>III

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About this question

This is a previous-year question from JEE Main 2019, covering the Coordination Compounds chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.