4 Crystal
Field
Theory
While the VB theory, to a larger extent, explains the formation, structures
and magnetic behaviour of coordination compounds, it suffers from
the following shortcomings:
(i) It involves a number of assumptions (ii) It does not give quantitative interpretation of magnetic data (iii) It does not explain the colour exhibited by coordination compounds (iv) It does not give a quantitative interpretation of the thermodynamic
or kinetic stabilities of coordination compounds