Crystal Field Theory

What are the exceptions to Crystal Field Theory (CFT) ?

Crystal Field Theory takes only d-orbitals of a central atom into account. The s and p orbits are not considered for the study.

Crystal Field Theory fails to explain the behaviour of certain metals which cause large splitting while others show small splitting.

Crystal Field Theory does not take into account the covalent character of bonding between the ligand and the central atom.

Crystal Field Theory does not take into account the _____ (ionic/covalent) character of bonding between the ligand and the central atom.

In tetrahedral molecular geometry, a central atom is located at the center of four substituents, which form the corners of a tetrahedron.

$\mathrm{CO}, {\mathrm{CN}}^{-}$ are _____ (strong/weak) field ligands.

Which of the following is strong field ligand?

$\mathrm{CO}, {\mathrm{CN}}^{-}$ are weak field ligands.

$\mathrm{CO}, {\mathrm{CN}}^{-}$ are strong field ligands.

What are strong field ligands?

${\mathrm{I}}^{-}, {\mathrm{Br}}^{-}, {\mathrm{Cl}}^{-}$ are strong field ligands.

${\mathrm{I}}^{-}, {\mathrm{Br}}^{-}, {\mathrm{Cl}}^{-}$ are weak field ligands.

${\mathrm{I}}^{-}, {\mathrm{Br}}^{-}, {\mathrm{Cl}}^{-}$ are _____ (strong/weak) field ligands.

Which of the following is weak field ligand?

What are weak field ligands?

The crystal field theory could not explain why anionic ligands are found at the low end of the spectrochemical series.

According to the crystal field theory ligands are point charges and thus, it follows that anionic ligands should exert the greatest splitting effect.

The crystal field theory could not explain why anionic ligands are found at the low end of the _____  series.

Which of the following is incorrect?