Match List I with List II
| List I | List II |
| A. \(PCl_3\) | I. See-saw shaped |
| B. \(SF_4\) | II. Square planar |
| C. \(BrF_3\) | III. Trigonal pyramidal |
| D. \(XeF_4\) | IV. Bent T shape |
Choose the correct answers from the options given below:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → A-III, B-I, C-IV, D-II
The shapes follow from the number of bond pairs and lone pairs on the central atom (VSEPR theory):
A. PCl3 — 3 bond pairs + 1 lone pair (sp3), so the molecule is trigonal pyramidal. This matches III.
B. SF4 — 4 bond pairs + 1 lone pair (sp3d); the lone pair takes an equatorial position of the trigonal bipyramid, giving a see-saw shape. This matches I.
C. BrF3 — 3 bond pairs + 2 lone pairs (sp3d); both lone pairs are equatorial, so the molecule is bent T-shaped. This matches IV.
D. XeF4 — 4 bond pairs + 2 lone pairs (sp3d2); the lone pairs are opposite each other, so the molecule is square planar. This matches II.
Note: This question is from the pre-rationalised NCERT book (2022-23). The topic is not there in the latest NCERT book (2026-27), and it is also out of the CUET 2026 syllabus.