Chapter 3, Problem 104AP

(a)

Interpretation Introduction

Interpretation:

Lewis diagram of $\text{ONCl}$ should be drawn and the geometries of the molecules should be predicted. Whether the molecule is polar or nonpolar should be predicted.

Concept Introduction:

The valence-shell electron-pair repulsion (VSEPR) theory states that each atom in a molecule occupy a geometry which reduces the repulsions between electrons in the valence shell of that atom. Geometry can be predicted looking at the Lewis structure of the molecule and its steric number.

  $\text{SN = }\left(\text{number of atoms bonded to central atom}\right)+(\text{number of lone pairs on central atom)}$

Polar molecules have a net dipole moment and net dipole moment is zero in nonpolar molecules.

(b)

Interpretation Introduction

Interpretation:

Lewis diagram of ${\text{O}}_2\text{NCl}$ should be drawn and the geometries of the molecules should be predicted. Whether the molecule is polar or nonpolar should be predicted.

Concept Introduction:

The valence-shell electron-pair repulsion (VSEPR) theory states that each atom in a molecule occupy a geometry which reduces the repulsions between electrons in the valence shell of that atom. Geometry can be predicted looking at the Lewis structure of the molecule and its steric number.

  $\text{SN = }\left(\text{number of atoms bonded to central atom}\right)+(\text{number of lone pairs on central atom)}$

Polar molecules have a net dipole moment and net dipole moment is zero in nonpolar molecules.

(c)

Interpretation Introduction

Interpretation:

Lewis diagram of ${\text{XeF}}_2$ should be drawn and the geometries of the molecules should be predicted. Whether the molecule is polar or nonpolar should be predicted.

Concept Introduction:

The valence-shell electron-pair repulsion (VSEPR) theory states that each atom in a molecule occupy a geometry which reduces the repulsions between electrons in the valence shell of that atom. Geometry can be predicted looking at the Lewis structure of the molecule and its steric number.

  $\text{SN = }\left(\text{number of atoms bonded to central atom}\right)+(\text{number of lone pairs on central atom)}$

Polar molecules have a net dipole moment and net dipole moment is zero in nonpolar molecules.

(d)

Interpretation Introduction

Interpretation:

Lewis diagram of ${\text{SCl}}_4$ should be drawn and the geometries of the molecules should be predicted. Whether the molecule is polar or nonpolar should be predicted.

Concept Introduction:

The valence-shell electron-pair repulsion (VSEPR) theory states that each atom in a molecule occupy a geometry which reduces the repulsions between electrons in the valence shell of that atom. Geometry can be predicted looking at the Lewis structure of the molecule and its steric number.

  $\text{SN = }\left(\text{number of atoms bonded to central atom}\right)+(\text{number of lone pairs on central atom)}$

Polar molecules have a net dipole moment and net dipole moment is zero in nonpolar molecules.

(e)

Interpretation Introduction

Interpretation:

Lewis diagram of ${\text{CHF}}_3$ should be drawn and the geometries of the molecules should be predicted. Whether the molecule is polar or nonpolar should be predicted.

Concept Introduction:

The valence-shell electron-pair repulsion (VSEPR) theory states that each atom in a molecule occupy a geometry which reduces the repulsions between electrons in the valence shell of that atom. Geometry can be predicted looking at the Lewis structure of the molecule and its steric number.

  $\text{SN = }\left(\text{number of atoms bonded to central atom}\right)+(\text{number of lone pairs on central atom)}$

Polar molecules have a net dipole moment and net dipole moment is zero in nonpolar molecules.