This splitting of the
Rationalised 2023-24
132
Chemistry
degenerate levels due to the
presence of ligands in a
definite geometry is termed as
crystal field splitting and
the energy separation is
denoted by Do (the subscript
o is for octahedral) (Fig 5 8) Thus, the energy of the two eg
orbitals will increase by (3/5)
Do and that of the three t2g will
decrease by (2/5)Do