`CN^(-)` is a strong field ligand. This is due to the fact that

Options

A. it carries negative charge
B. it is a pseudohalide
C. it can accept electrons from metal species
D. it forms high spin complexes with metal species

Answer

B

Explanation

`CN^(-)` is a strong field ligand as it is a pseudohalide ion. These ions the tendency to form `sigma`-bond (from the pseudohalide to the metal) and `pi`-bond (from the metal to pseudo halide)