Chapter 9.3, Problem 31LC

(a)

Interpretation Introduction

Interpretation: The formula for the given molecular compound is to be stated.

Concept Introduction : Molecular compounds are formed by the sharing of electrons between non-metals. They are known as carbon compounds. The naming of the compound is: $\text{Name}\text{of}\text{first}\text{element}+\text{Stem}\text{of}\text{second}\text{element}+\text{'}ide\text{'}$

Answer to Problem 31LC

The formula of the compound is ${\text{PCl}}_{\text{5}}$ .

Explanation of Solution

The given compound is phosphorus pentachloride. It is composed of phosphorus and chlorine atoms. The prefix used for ‘penta’ is ‘five’. Thus, the formula of the compound is ${\text{PCl}}_{\text{5}}$ .

(b)

Interpretation Introduction

Interpretation: The formula for the given molecular compound is to be stated.

Concept Introduction : Molecular compounds are formed by the sharing of electrons between non-metals. They are known as carbon compounds. The naming of the compound is: $\text{Name}\text{of}\text{first}\text{element}+\text{Stem}\text{of}\text{second}\text{element}+\text{'}ide\text{'}$

Answer to Problem 31LC

The formula of the compound is ${\text{IF}}_{\text{7}}$ .

Explanation of Solution

The given compound is iodine heptafluoride. It is composed of iodine and fluorine atoms. The prefix used for ‘hepta’ is ‘seven’. Thus, the formula of the compound is ${\text{IF}}_{\text{7}}$ .

(b)

Interpretation Introduction

Interpretation: The formula for the given molecular compound is to be stated.

Concept Introduction : Molecular compounds are formed by the sharing of electrons between non-metals. They are known as carbon compounds. The naming of the compound is: $\text{Name}\text{of}\text{first}\text{element}+\text{Stem}\text{of}\text{second}\text{element}+\text{'}ide\text{'}$

Answer to Problem 31LC

The formula of the compound is ${\text{ClF}}_{\text{3}}$ .

Explanation of Solution

The given compound is chlorine trifluoride. It is composed of chlorine and fluorine atoms. The prefix used for ‘tri’ is ‘three’. Thus, the formula of the compound is ${\text{ClF}}_{\text{3}}$ .

(d)

Interpretation Introduction

Interpretation: The formula for the given molecular compound is to be stated.

Concept Introduction : Molecular compounds are formed by the sharing of electrons between non-metals. They are known as carbon compounds. The naming of the compound is: $\text{Name}\text{of}\text{first}\text{element}+\text{Stem}\text{of}\text{second}\text{element}+\text{'}ide\text{'}$

Answer to Problem 31LC

The formula of the compound is ${\text{IO}}_{\text{2}}$ .

Explanation of Solution

The given compound is iodine dioxide. It is composed of iodine and oxygen atoms. The prefix used for ‘di’ is ‘two’. Thus, the formula of the compound is ${\text{IO}}_{\text{2}}$ .