## Chemistry: Molecular Approach (4th Edition)

The ligands that cause large splitting of the d orbitals $\left( i.e.,\text{ }large\text{ }{{\Delta }_{o}} \right)$ are called strong field ligands, and the ligands that lead to small $~{{\Delta }_{o}}$ are called weak field ligands.
The ligands that cause large splitting of the d orbitals $\left( i.e.,\text{ }large\text{ }{{\Delta }_{o}} \right)$ are called strong field ligands, and the ligands that lead to small $~{{\Delta }_{o}}$ are called weak field ligands.