JEE Main 2019ChemistryCoordination CompoundsMediumMCQ

JEE Main 2019 — Coordination Compounds Question with Solution

JEE Main 2019 (12 Apr Shift 2)

Question

The coordination numbers of Co and Al in CoClen2Cl and K3AlC2O43, respectively are:
(en = ethane-1, 2-diamine)

Choose an option

Show full solutionCorrect option: C
Correct answer
C5 and 6

Step-by-step explanation

Compound CoClen2+
Since Cl- is monodentate ligand, en →  bidentate ligand
Co-ordination number =1+2×2=5
Compound CoC2O433-
OX2-→ bidentate ligand co-ordination number = 3 × 2 = 6

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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.