When the Ti3t ion is complexed by ligands X (a neutral molecule) and Y (an anion) it gives octahedral species of the type [TI(X)6]3* and [Ti(Y)6], respectively, which have two different colours. The complex containing ligand X shows a single absorbance in the visible region with a peak maximum at 520 nm, while that containing Y has a peak maximum at 580 nm. Which of the two ligands produces the higher crystal field splitting energy (CFSE) for Cu2+? a. The crystal field splitting is not caused by the ligand as one complex is a cation and one is an anion O b. The CFSES for the two complexes are the same O C. Ligand X produces the higher CFSE Ligand Y produces the higher CFSE