Chapter 8, Problem 49A

(a)

Interpretation Introduction

Interpretation:

Draw a plausible electron dot structure or Lewis dot structure ${\text{I}}_{\text{2}}$ .

Concept Interpretation:

Diagrams that show the chemical bonds between the atoms of a molecule are known as Lewis dot structures, also known as electron dot structures.

Answer to Problem 49A

Lewis dot structure or plausible electron dot structure for ${\text{I}}_{\text{2}}$ .

  

Explanation of Solution

There are just two iodine atoms in the diatomic molecule of iodine. Iodine molecules only have one I-I bond in their Lewis structures, and each iodine atom has three lone pairs.

  

(b)

Interpretation Introduction

Interpretation:

Draw a plausible electron dot structure or Lewis dot structure ${\text{OF}}_{\text{2}}$ .

Concept Interpretation:

Lewis structures are used to represent the valence shell electrons in molecules in a very simplistic way.

Answer to Problem 49A

Lewis dot structure or plausible electron dot structure for ${\text{OF}}_{\text{2}}$ .

  

Explanation of Solution

The core oxygen atom of the ${\text{OF}}_{\text{2}}$ molecule is surrounded by two lone pairs of electrons in the Lewis structure.

  

(c)

Interpretation Introduction

Interpretation:

Draw a plausible electron dot structure or Lewis dot structure for ${\text{H}}_{\text{2}}\text{S}$

Concept Interpretation:

Lewis's structure is a visual representation of how electrons are distributed around an atom.

Answer to Problem 49A

Lewis dot structure or plausible electron dot structure for ${\text{H}}_{\text{2}}\text{S}$ .

  

Explanation of Solution

Hydrogen sulfide ( ${\text{H}}_{\text{2}}\text{S}$ ) has two single bonds encircling the sulfur atoms in its Lewis structures. There are also two lone pairs among the sulfur atoms.

  

(d)

Interpretation Introduction

Interpretation:

Lewis dot structure or plausible electron dot structure for ${\text{NI}}_{\text{3}}$ .

Concept Interpretation:

In a Lewis structure, the covalent bonds between the atoms are represented by lines or pairs of dots, while the positions of the electrons around the atoms are indicated by dots.

Answer to Problem 49A

Lewis dot structure or plausible electron dot structure for ${\text{NI}}_{\text{3}}$ .

  

Explanation of Solution

The ${\text{NI}}_{\text{3}}$ Lewis structure has a triangular pyramidal form. The central atom of nitrogen, which has a lone pair present, gives the complex its bent shape. The Lewis structure is as follows: