Question

What is the usefulness of crystal field theory compared to valence bond theory

Answer 1

This combination of valence bond structures is the main point of resonance theory. Valence bond theory considers that the overlapping atomic orbitals of the participating atoms form a chemical bond. Because of the overlapping, it is most probable that electrons should be in the bond region.

Answer 2

Crystal Field Theory (CFT) : Unlike Valence Bond Theory, CGT considers the metal - ligand bond to be ionic and not coordinate, arising purely from electrostatic interactions between the metal and the ligand. ... According to CFT, all the five d- orbitals of a transition element are degenerate in nature.