JEE Main 2026 Jan 28 Shift 2, Chemistry Q12: Valence Shell Electron Pair Repulsion (VSEPR) Theory

Apply VSEPR by counting bond pairs (bp) and lone pairs (lp):

A. XeO${}_3$: 3 bp + 1 lp $\Rightarrow$ pyramidal — same shape family as NH${}_3$ (II).

B. XeF${}_2$: 2 bp + 3 lp $\Rightarrow$ linear — same as $[{\text{I}}_3{]}^{-}$ (III).

C. XeO${}_2$F${}_2$: 4 bp + 1 lp $\Rightarrow$ see-saw — same as SF${}_4$ (IV).

D. XeOF${}_4$: 5 bp + 1 lp $\Rightarrow$ square pyramidal — same as BrF${}_5$ (I).

$\therefore$ A-II, B-III, C-IV, D-I.