Chapter 9.3, Problem 35LC

(a)

Interpretation Introduction

Interpretation: The given compound is molecular or ionic compound is to be predicted and the name for the same is to be stated.

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

Ionic compounds are formed by the transfer of electrons between metal and non-metal. They are named as $\text{Name}\text{of}\text{metal}+\text{Stem}\text{of}\text{non-metal}+\text{'}ide\text{'}$

Answer to Problem 35LC

The given compound is covalent, and its name is phosphorus tribromide.

Explanation of Solution

The given compound is ${\text{PBr}}_3$ . Both are non-metals. So, the compound is covalent compound. The prefix used for ‘three’ is ‘tri’. Thus, the name of compound is phosphorus tribromide.

(b)

Interpretation Introduction

Interpretation: The given compound is a molecular or ionic compound is to be predicted and the name for the same is to be stated.

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

Ionic compounds are formed by the transfer of electrons between metal and non-metal. They are named as $\text{Name}\text{of}\text{metal}+\text{Stem}\text{of}\text{non-metal}+\text{'}ide\text{'}$

Answer to Problem 35LC

The given compound is ionic, and its name is potassium bromide.

Explanation of Solution

The given compound is $\text{KBr}$ . It is composed of potassium (metal) and bromine (non-metal). So, the compound is ionic compound. It is formed by ${\text{K}}^{+}$ ion and ${\text{Br}}^{-}$ ion.

Thus, the name of compound is potassium bromide.

(c)

Interpretation Introduction

Interpretation: The given compound is molecular or ionic compound is to be predicted and the name for the same is to be stated.

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

Ionic compounds are formed by the transfer of electrons between metal and non-metal. They are named as $\text{Name}\text{of}\text{metal}+\text{Stem}\text{of}\text{non-metal}+\text{'}ide\text{'}$

Answer to Problem 35LC

The given compound is ionic, and its name is iron (III) oxide $\left({\text{Fe}}_2{\text{O}}_3\right)$ .

Explanation of Solution

The given compound is iron (III) oxide. It is composed of iron (metal) and oxygen (non-metal). So, the compound is ionic compound. It is formed by ${\text{Fe}}^{3+}$ ion and ${\text{O}}^{2-}$ ion.

Thus, the formula of the compound is ${\text{Fe}}_2{\text{O}}_3$ .

(d)

Interpretation Introduction

Interpretation: The given compound is molecular or ionic compound is to be predicted and the name for the same is to be stated.

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

Ionic compounds are formed by the transfer of electrons between metal and non-metal. They are named as $\text{Name}\text{of}\text{metal}+\text{Stem}\text{of}\text{non-metal}+\text{'}ide\text{'}$

Answer to Problem 35LC

The given compound is covalent, and its name is carbon tetraiodide $\left({\text{CI}}_{\text{4}}\right)$ .

Explanation of Solution

The given compound is carbon tetraiodide. It is composed of carbon (non-metal) and iodine (non-metal). Both are non-metals. So, the compound is covalent compound.

The prefix used for ‘four’ is ‘tetra’. Thus, the formula of the compound is ${\text{CI}}_{\text{4}}$ .