Strong field ligands, such as CN⁻, usually produce low spin complexes and large crystal field splitting. If true, enter 1; else, enter 0.

The statement is true.

Explanation:

Ligands can be classified as strong field or weak field ligands based on their ability to split the d-orbitals of a transition metal ion in a coordination complex. This splitting is described by the Crystal Field Splitting Energy (CFSE), denoted as Δ.

Strong Field Ligands:

Ligands like CN⁻, CO, and NH₃ are considered strong field ligands.
They cause a large crystal field splitting (high Δ).
In the presence of a large splitting, it becomes energetically favorable for electrons to pair up in the lower-energy (t₂g) orbitals rather than occupy the higher-energy (e_g) orbitals.
This results in a low spin complex with fewer unpaired electrons.
Weak Field Ligands:

Ligands like I⁻, Br⁻, and Cl⁻ are weak field ligands.
They produce small crystal field splitting (low Δ).
Electrons prefer to occupy higher energy orbitals instead of pairing up, leading to high spin complexes with more unpaired electrons.
Since CN⁻ is a strong field ligand, it indeed produces low spin complexes and large crystal field splitting.

Answer: 1