Question

sp\(^3\) d\(^2\) hybridisation is not displayed by:

• A. BrF\(_5\)
• B. SF\(_6\)
• C. [CrF\(_6\)]\(^{3-}\)
• D. PF\(_5\)

Hint:

sp\(^3\) d\(^2\) hybridisation occurs when the central atom has six bonding pairs, typically seen in octahedral structures.

Answer 1

The Correct Option is D

Step 1: {Central Atom Hybridisation}
In sp\(^3\) d\(^2\) hybridisation, one s, three p, and two d orbitals of the central atom combine to form six hybrid orbitals. This occurs when the central atom is bonded to six other atoms. 
Step 2: {Compound Analysis} 
In BrF\(_5\), bromine exhibits sp\(^3\) d\(^2\) hybridisation because it is bonded to five fluorine atoms.
In SF\(_6\), sulfur exhibits sp\(^3\) d\(^2\) hybridisation because it is bonded to six fluorine atoms.
In [CrF\(_6\)]\(^{3-}\), chromium exhibits sp\(^3\) d\(^2\) hybridisation due to bonding with six fluoride ions.
In PF\(_5\), phosphorus exhibits sp\(^3\) hybridisation as it is bonded to five fluorine atoms, not six.
Therefore, the correct option is (D).