Question

Which of the following molecular geometries (shapes) would NOT be possible for a molecule or polyatomic ion in which the central atom was $s{p}^3$ hybridized?

• A. Tetrahedral.
• B. Trigonal pyramidal.
• C. Trigonal planar.
• D. Linear.

Answer 1

The correct option is C Trigonal planar.

Trigonal planar is a molecular geometry model with one atom at the center and three atoms at the corners of an equilateral triangle, called peripheral atoms, all in one plane.If one lone pair is present in $s{p}^3$ hybridized atom its geometry becomes trigonal bypyramidal.If two lone is present in $s{p}^3$ hybridized atom it become linear. then Thus, if central atom was $s{p}^3$ hybridized trigonal planar is not possible because trigonal planar geometry have only three bond pair but $s{p}^3$ hybridized atom have have four bond pair.