Question:
The correct ascending order of ligand field strengths of the given ligands is
The correct ascending order of ligand field strengths of the given ligands is
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Weak field → halides
Strong field → CN$^-$, CO
CO is strongest among common ligands.
Updated On: May 8, 2026
- F$^- <$ I$^- <$ CN$^- <$ H$_2$O $<$ CO
- I$^- <$ F$^- <$ H$_2$O $<$ CO $<$ CN$^-$
- I$^- <$ F$^- <$ H$_2$O $<$ CN$^- <$ CO
- F$^- <$ H$_2$O $<$ I$^- <$ CN$^- <$ CO
- F$^- <$ I$^- <$ CO $<$ H$_2$O $<$ CN$^-$
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Concept:
Ligand field strength follows the spectrochemical series:
\[
I^- < Br^- < Cl^- < F^- < H_2O < NH_3 < CN^- < CO
\]
Step 1: Extract required ligands Given: I$^-$, F$^-$, H$_2$O, CN$^-$, CO
Step 2: Arrange in increasing strength \[ I^- < F^- < H_2O < CN^- < CO \]
Step 3: Match option Option (C) matches exactly.
Step 1: Extract required ligands Given: I$^-$, F$^-$, H$_2$O, CN$^-$, CO
Step 2: Arrange in increasing strength \[ I^- < F^- < H_2O < CN^- < CO \]
Step 3: Match option Option (C) matches exactly.
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