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Question: Answered & Verified by Expert
Indicate the complex/complex ion which did not show any geometrical isomerism :
ChemistryCoordination CompoundsJEE MainJEE Main 2021 (26 Aug Shift 2)
Options:
  • A CoNH34Cl2+
  • B CoNH33NO23
  • C Co(CN)5(NC)3-
  • D CoCl2(en)2
Solution:
1008 Upvotes Verified Answer
The correct answer is: Co(CN)5(NC)3-
1CoNH34Cl2+show cis-trans isomerism.
2CoCl2(en)2 show cis-trans isomerism.
3CoNH33NO23 show fac-mer isomerism.
4[Co(CN)5(NC)]3-can't show geometrical isomerism due to the presence of plane of symmetry.

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