JEE Main 2021 — Coordination Compounds Question with Solution
From: JEE Main 2021 (Online) 25th July Evening Shift
Question
Which one of the following metal complexes is most stable?
Choose an option
Show full solutionCorrect option: B
Correct answer
B[Co(en)3]Cl2
Step-by-step explanation
Complex [Co(en)3]Cl2 is most stable complex among the given complex compounds because more number of chelate rings are present in this complex as compare to others.
(1) [Co(en)(NH3)4]Cl2 1 chelate ring
(2) [Co(en)3]Cl2 3 chelate ring
(3) [Co(en)2(NH3)2]Cl2 2 chelate ring
(4) [Co(NH3)6]Cl2 0 chelate ring
(1) [Co(en)(NH3)4]Cl2 1 chelate ring
(2) [Co(en)3]Cl2 3 chelate ring
(3) [Co(en)2(NH3)2]Cl2 2 chelate ring
(4) [Co(NH3)6]Cl2 0 chelate ring
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This is a previous-year question from JEE Main 2021, 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.