Chapter 11, Problem 17STP

Interpretation Introduction

Interpretation:

The molecular shape corresponding to sp² hybridization needs to be determined.

Concept introduction:

The molecular shape of the molecule depends on the number of bonds and lone pairs of electrons present in the molecule. The total number of valence electrons decides the hybridization of the central atom thus, the molecular geometry. The number of lone pairs decides the molecular shape which is different from molecular geometry due to lone pair-bond pair repulsion.

Answer to Problem 17STP

Correct Answer: Options B and D.

Explanation of Solution

Reason for correct option:

The sp² hybridization represents the total number of pairs of valence electrons to be 3. These could be just a bonded pair of electrons or bonded pairs along with lone pairs of electrons.

For 3 total pairs of valence electrons, the molecular geometry is trigonal planar. Now, if there is zero lone pair of electrons in the molecule, the molecular shape will also be trigonal planar but, if there is one lone pair of electron present on the central atom, the molecular shape will become linear.

Thus, the correct options will be B and D.

Conclusion

Reason for incorrect option:

The other molecular geometries represent sp³ hybridization.