Question

The molecular shapes of SF4 , CF4 and XeF4 are

(a) the same with 2, 0 and 1 lone pairs of electrons on the central atom respectively.

(b) the same with 1, 1 and 1 lone pair of electrons on the central atoms respectively.

(c) different with 0, 1 and 2 lone pairs of electrons on the central atom respectively.

(d) different with 1, 0 and 2 lone pairs of electrons on the central atom respectively

Answer 1

(d) : SF4 (sp3d, trigonal bipyramidal with one equatorial position occupied by 1 lone pair), CF4 (sp3, tetrahedral, no lone pair), XeF4 (sp3d2, square planar, two lone pairs).