Question

Which of the following is/are limitations of crystal field theory?

• A. It does not explain the colour of the complex
• B. It does not predict the magnetic moment of complex
• C. It does not explains $\pi -$ bonding in complex
• D. It does not consider any metal orbitals other than d-orbital

Answer 1

Answer: (C), (D)

It does not consider any metal orbitals other than d-orbital

CFT allow us to understand, interpret, and predict the colors and magnetic behavior of coordination compounds of transition metals.

Limitations of crystal field theroy:
1. It considers only the ​metal ion d-orbitals. No consideration ​
at all to other metal orbitals.
2. It is unable to explain the relative strengths of ligands.
3. It gives no ​account on the partially covalent nature of the metal-ligand bonds.
4. It could not explain the $\pi$-bonding in complexes