KCET · Chemistry · Coordination Compounds
Which of the following sequence is correct regarding field strength of ligands as per
spectrochemical series?
- A \( \mathrm{SCN}^{-} < \mathrm{F}^{-} < C N^{-} < C O \)
- B \( F^{-} < S C N^{-} < C N^{-} < C O \)
- C \( C N^{-} < F^{-} < C O < S C N^{-} \)
- D \( \mathrm{SCN}^{-} < C O < \mathrm{F}^{-} < C N^{-} \)
Answer & Solution
Correct Answer
(A) \( \mathrm{SCN}^{-} < \mathrm{F}^{-} < C N^{-} < C O \)
Step-by-step Solution
Detailed explanation
The crystal field splitting energy \( (\Delta) \) depends on the nature of ligands. The order of the ligands is an experimentally
determined order based on the absorption of light by complexes with different ligands.
Therefore, the correct order of ligands is \( S C N^{-} < F^{-} < C N^{-} < C O \)
determined order based on the absorption of light by complexes with different ligands.
Therefore, the correct order of ligands is \( S C N^{-} < F^{-} < C N^{-} < C O \)
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