Not in visible
region
Rationalised 2023-24
134
Chemistry
   It is important to note that
in the absence of ligand,
crystal field splitting does
not occur and hence the
substance is colourless For
example, removal of water
from [Ti(H2O)6]Cl3 on heating
renders 
it 
colourless Similarly, anhydrous CuSO4
is white, but CuSO4 5H2O is
blue in colour