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Question: Answered & Verified by Expert
In the complex [Co(en)3]3+, what is the coordination number of the cobalt ion?
ChemistryCoordination CompoundsNEET
Options:
  • A 3
  • B 4
  • C 5
  • D 6
Solution:
2077 Upvotes Verified Answer
The correct answer is: 6
The coordination number of Co in the complex[Co(en)3]3+ is 6 because it is bonded to three en (ethane-1,2-diamine) ligands, each contributing two donor atoms.

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