Q. 50 Why are different colours observed in octahedral and tetrahedral
complexes for the same metal and same tigands?
Extent of spliting of d-orbitals is different in octahedral and tetrahedral field, CFSE in
octahedral and tetra federal field are closely related as.
Where, = crystal field splitting energy in tetrahedral field
= crystal field splitting energy in octahedral field
Wavelength fo light and CFSE are releated to each other by formula
So, higher wavelength o light is absorbed in octahedral complexes than tetrahedral
complex for same metal and ligands. Thus, different colours are obserevd.