91Ó°ÊÓ

Draw the Lewis structure for chloroform, CHCl \(_{3}\). What are its electron- pair and molecular geometries? What orbitals on \(\mathrm{C}, \mathrm{H},\) and $$\mathrm{Cl}$ overlap to form bonds involving these elements?

Draw the Lewis structure for \(\mathrm{NF}_{3} .\) What are its electronpair and molecular geometries? What is the hybridization of the nitrogen atom? What orbitals on \(\mathrm{N}\) and \(\mathrm{F}\) overlap to form bonds between these elements?

Specify the electron-pair and molecular geometry for each of the following. Describe the hybrid orbital set used by the underlined atom in each molecule or ion. (a) \(\underline{\mathrm{BBr}}_{3}\) (b) \(\underline{\mathrm{CO}}_{2}\) (c) \(\underline{\mathrm{CH}}_{2} \mathrm{Cl}_{2}\) (d) \(\underline{\mathrm{CO}}_{3}^{2-}\)

Specify the electron-pair and molecular geometry for each of the following. Describe the hybrid orbital set used by the underlined atom in each molecule or ion. (a) \(\underline{\mathrm{CSe}}_{2}\) (b) \(\underline{\mathrm{SO}}_{2}\) (c) \(\underline{\mathrm{CH}}_{2} \mathrm{O}\) (d) \(\underline{\mathrm{NH}}_{4}^{+}\)

Draw the Lewis structure and then specify the electronpair and molecular geometries for each of the following molecules or ions. Identify the hybridization of the central atom. (a) \(\mathrm{SiF}_{6}^{2-}\) (b) \(\mathrm{SeF}_{4}\) (c) \(\mathrm{ICl}_{2}^{-}\) (d) \(\mathrm{XeF}_{4}\)

Draw the Lewis structure and then specify the electronpair and molecular geometries for each of the following molecules or ions. Identify the hybridization of the central atom. (a) \(\mathrm{XeOF}_{4}\) (c) \(\mathrm{OSF}_{4}\) (b) \(\mathrm{BrF}_{5}\) (d) central Br in \(\mathrm{Br}_{3}^{-}\)

Draw the Lewis structures of the acid HPO \(_{2} \mathrm{F}_{2}\) and its anion \(\mathrm{PO}_{2} \mathrm{F}_{2}^{-} .\) What is the molecular geometry and hybridization for the phosphorus atom in each species? (H is bonded to the O atom in the acid.)

Draw the Lewis structures of HSO \(_{3} \mathrm{F}\) and \(\mathrm{SO}_{3} \mathrm{F}^{-}\). What is the molecular geometry and hybridization for the sulfur atom in each species? (H is bonded to the O atom in the acid.)

What is the hybridization of the carbon atom in phosgene, \(\mathrm{Cl}_{2}\) CO? Give a complete description of the \(\sigma\) and \(\pi\) bonding in this molecule.

What is the hybridization of the sulfur atom in sulfuryl fluoride, \(\mathrm{SO}_{2} \mathrm{F}_{2} ?\)