Discussion
The species that has 'T' shape is
Answer: C
The T-shaped species is BrF3.
Bromine has 7 valence electrons. Three form bonds to fluorine and the remaining four make two lone pairs, giving five electron pairs in a trigonal bipyramid. The two lone pairs take equatorial positions, where they have more room, leaving the three fluorines in a T: two axial and one equatorial, with F-Br-F angles a little under 90°.
The other three have four electron pairs around the central atom, one of them a lone pair, and so are trigonal pyramidal: PCl3 (three P-Cl bonds and a lone pair), SOCl2 (S=O, two S-Cl and a lone pair on sulfur) and [IO3]− (three I-O bonds and a lone pair on iodine). None of them is T-shaped.
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