Determine molecular shapes using VSEPR theory:
A. XeO₃ (3 bonds, 2 lone pairs on Xe): pyramidal
B. XeF₂ (2 bonds, 3 lone pairs on Xe): linear
C. XeO₂F₂ (4 bonds, 2 lone pairs on Xe): see-saw
D. XeOF₄ (5 bonds, 1 lone pair on Xe): square pyramidal
Matching with shapes:
I. BrF₅: square pyramidal → D-I
II. NH₃: pyramidal → A-II
III. [I₃]⁻: linear → B-III
IV. SF₄: see-saw → C-IV