1
Consider the following species: SOCl2, XeOF4, ClF3, ClF5, XeF5+, SO32-, XeF3+, SF4 List-I contains different molecular shapes and List-II contains total number of species with the same molecular shapes from the given species. Match each entry in List-I with the appropriate entry in List-II and choose the correct option.
- P → 1; Q → 2; R → 5; S → 3
- P → 5; Q → 4; R → 2; S → 3
- P → 3; Q → 2; R → 1; S → 4
- P → 1; Q → 3; R → 5; S → 4
Answer
(1) P → 1; Q → 2; R → 5; S → 3
Solution
Shapes from VSEPR (bond pairs + lone pairs on the central atom):
SOCl2 (3 bp + 1 lp): trigonal pyramidal. SO32- (3 bp + 1 lp): trigonal pyramidal.
XeOF4, ClF5, XeF5+ (5 bp + 1 lp): square pyramidal, so 3 species.
ClF3, XeF3+ (3 bp + 2 lp): T-shaped, so 2 species. SF4 (4 bp + 1 lp): see-saw, so 1 species.
None of the species is trigonal planar, so 0.
P → 1, Q → 2, R → 5, S → 3
Answer: (A)
JEE Advanced 2026 Paper 1