Q. In which one of the following species the central atom has the type of hybridisation which is not the same as that present in the other three?
A) PCl₅
B) SF₄
C) I₃⁻
D) SbCl₅²⁻
Explanation
[Solution from source] PCl₅ (5 bond pairs), SF₄ (4 bp + 1 lp) and I₃⁻ (2 bp + 3 lp) all have 5 electron pairs: sp³d. SbCl₅²⁻ has Sb(III) with 5 bond pairs and 1 lone pair, 6 pairs: sp³d², so it is the odd one out. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.