Chapter 10.1, Problem 1PE

(a)

Interpretation Introduction

Interpretation: The geometry of ${\text{SiBr}}_4$ has to be predicted using the VSEPR model.

Concept Introduction:

VSEPR means valence shell electron pair repulsion theory. This theory is the study of molecular geometry of molecules based on the electron pairs surrounding their central atoms.

The geometry of a given molecule can be predicted using the following steps:

Step1: The Lewis structure of the molecule has to be drawn

Step 2: The arrangement of electron pairs around the central atom, has to be determined.

Step 3: The arrangement of the bonding pairs has to be determined.

Step 4: Finally, the geometry of the molecule can be determined based on bonding pairs.

The following table shows the arrangement of electron pairs about a central atom (A) in a molecule and geometry of some simple molecules and ions in which the central atom has no lone pairs.

Figure 1

The following table shows the geometry of the molecules and ions in which the central atom has one or more lone pairs.

Figure 2

(b)

Interpretation Introduction

Interpretation: The geometry of ${\text{CS}}_{\text{2}}$ has to be predicted using the VSEPR model.

Concept Introduction:

VSEPR means valence shell electron pair repulsion theory. This theory is the study of molecular geometry of molecules based on the electron pairs surrounding their central atoms.

The geometry of a given molecule can be predicted using the following steps:

Step1: The Lewis structure of the molecule has to be drawn

Step 2: The arrangement of electron pairs around the central atom, has to be determined.

Step 3: The arrangement of the bonding pairs has to be determined.

Step 4: Finally, the geometry of the molecule can be determined based on bonding pairs.

The following table shows the arrangement of electron pairs about a central atom (A) in a molecule and geometry of some simple molecules and ions in which the central atom has no lone pairs.

Figure 1

The following table shows the geometry of the molecules and ions in which the central atom has one or more lone pairs.

Figure 2

(c)

Interpretation Introduction

Interpretation: The geometry of ${\text{NO}}_{\text{3}}^{\text{-}}$ has to be predicted using the VSEPR model.

Concept Introduction:

VSEPR means valence shell electron pair repulsion theory. This theory is the study of molecular geometry of molecules based on the electron pairs surrounding their central atoms.

The geometry of a given molecule can be predicted using the following steps:

Step1: The Lewis structure of the molecule has to be drawn

Step 2: The arrangement of electron pairs around the central atom, has to be determined.

Step 3: The arrangement of the bonding pairs has to be determined.

Step 4: Finally, the geometry of the molecule can be determined based on bonding pairs.

The following table shows the arrangement of electron pairs about a central atom (A) in a molecule and geometry of some simple molecules and ions in which the central atom has no lone pairs.

Figure 1

The following table shows the geometry of the molecules and ions in which the central atom has one or more lone pairs.

Figure 2