Co Ordination Compounds Question 248
$ CN^{-} $ is a strong field ligand. This is due to the fact that
[CBSE NEET 2004]
Options:
A) It can accept electrons from metal species
B) It forms high spin complexes with metal species
C) It carries negative charge.
D) It is a pseudohalide
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Answer:
Correct Answer: D
Solution:
Cyanide ion is a strong field ligand because it is a pseudohalide ion. Pseudohalide ions are stronger coordinating ligands and they have the ability to form $ \sigma $ bond (from the pseudohalide to the metal) and $ \pi $ bond (from the metal to pseudohalide).
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