Chemistry · CHEMICAL BONDING AND MOLECULAR STRUCTURE

Consider the following statements regarding hybridisation involving d-orbitals: (A) \( \text{dsp}^2 \) hybridisation gives a square planar geometry as in \( [\text{Ni}(\text{CN})_4]^{2-} \). (B) \( \text{sp}^3\text{d} \) hybridisation gives a trigonal bipyramidal geometry as in \( \text{PCl}_5 \). (C) \( \text{sp}^3\text{d}^2 \) hybridisation gives an octahedral geometry as in \( \text{SF}_6 \). (D) Hybridisation involving \( 3p \), \( 3d \), and \( 4s \) orbitals is easily possible due to similar energies. How many of the above statements are correct?

1. Only one
2. Only two
3. Only three
4. All four