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Question: Answered & Verified by Expert
Why do [Fe(CN)6]4–and [Fe(H2O)6]2+have different colours in dilute solutions?
ChemistryCoordination CompoundsNEET
Options:
  • A The colour of a coordination compound depends on CFSE, CN−is a strong field ligand having a higher CFSE value as compared to the CFSE value of water.
  • B [Fe(CN)6]4–appears green, while [Fe(H2O)6]2+appears yellow due to differences in ligand field splitting.
  • C Both [Fe(CN)6]4–and [Fe(H2O)6]2+appear colourless in dilute solutions.
  • D The colour difference is due to differences in the coordination number of the iron ion.
Solution:
1593 Upvotes Verified Answer
The correct answer is: The colour of a coordination compound depends on CFSE, CN−is a strong field ligand having a higher CFSE value as compared to the CFSE value of water.
Correct Option is : (A)
The colour of a coordination compound depends on CFSE, CN−is a strong field ligand having a higher CFSE value as compared to the CFSE value of water.

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