Which one of the following statement(s) is/are false?

Options

A. weak ligands like `F^(-),Cl^(-) and and OH^(-)` usually form low spin complexes
B. Strong ligand like `CN^(-)` and `NO_(2)^(-)`, generally form high spin complexes
C. `[FeF_(6)]^(3-)` is high spin complex
D. `[Ni(CO)_(4)]` is high spin complex

Answer

A, B, D

Explanation

`F^(-),Cl^(-) and OH^(-)` are weak field ligands usually form high spin complexes.
`CN^(-) and NO_(2)^(-)` are strong field ligands usually form low spin complexes.
`[Ni(CO)_(4)]` is low spin complex.