sp³d² hybridisation is seen in:

Question

Question

This question was previously asked in

DSSSB PGT Chemistry (Female) Official Paper (Held On: 06 Jul, 2018 Shift 1)

Answer 1

CONCEPT:

Hybridisation and Geometry

Hybridisation is the concept of mixing atomic orbitals to form hybrid orbitals which are used in bonding.
sp³d² hybridisation involves the mixing of one s orbital, three p orbitals, and two d orbitals, resulting in six hybrid orbitals.
Molecules with sp³d² hybridisation exhibit an octahedral geometry.

EXPLANATION:

For the given options:
- 1) BrCl₃: Bromine forms three bonds and has two lone pairs, resulting in sp³d hybridisation. Geometry is T-shaped.
- 2) BrF: Bromine forms a single bond with fluorine, with three lone pairs, resulting in sp³ hybridisation. Geometry is linear.
- 3) ICl₅: Iodine forms five bonds with chlorine and has one lone pair. This corresponds to sp³d² hybridisation. Geometry is square pyramidal.
- 4) ClF₃: Chlorine forms three bonds with fluorine and has two lone pairs, resulting in sp³d hybridisation. Geometry is T-shaped.
Hence, the only molecule exhibiting sp³d² hybridisation is ICl₅.

Therefore, the correct answer is option 3 (ICl₅).