Hybridization and Bond Lengths in SF4 | JEE Main PYQ | Chemical Bonding
Which among the following molecules is (a) involved in sp3d hybridization, (b) has different bond lengths and (c) has lone pair of electrons on the central atom?
(A) XeF4
(B) XeF2
(C) PF5
(D) SF4

Correct Answer: SF4

Explanation

In SF4, sulfur undergoes sp3d hybridization with one lone pair, resulting in see-saw geometry.

Due to lone pair–bond pair repulsion, axial and equatorial S–F bonds have different bond lengths.

Hence SF4 satisfies all the given conditions.

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