Chapter 9, Problem 97A

(a)

Interpretation Introduction

Interpretation: The names for the given ionic compounds are to be examined and if the names are incomplete then the complete name is to be given.

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 $\text{Name}\text{of}\text{first}\text{element}+\text{Stem}\text{of}\text{second}\text{element}+\text{'}ide\text{'}$

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 97A

The formula is ${\text{CuS}}_{\text{2}}$ . The oxidation state of copper is +1 so the name of the compound is given as copper(I) sulfide.

Explanation of Solution

The given name of ionic compound is copper sulfide. It is composed of ${\text{Cu}}^{+}$ and ${\text{S}}^{2-}$ . Thus, the formula is ${\text{CuS}}_{\text{2}}$ . The oxidation state of copper is +1 so the name of the compound is given as copper(I) sulfide.

(b)

Interpretation Introduction

Interpretation: The names for the given ionic compounds are to be examined and if the names are incomplete then the complete name is to be given.

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 $\text{Name}\text{of}\text{first}\text{element}+\text{Stem}\text{of}\text{second}\text{element}+\text{'}ide\text{'}$

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 97A

The formula is ${\text{FeSO}}_{\text{4}}$ . The oxidation state of iron is +2 so the name of the compound is given as iron(II) sulfate.

Explanation of Solution

The given name of ionic compound is iron sulfate. It is composed of ${\text{Fe}}^{2+}$ and ${\text{SO}}_4{}^{2-}$ . Thus, the formula is ${\text{FeSO}}_{\text{4}}$ . The oxidation state of iron is +2 so the name of the compound is given as iron(II) sulfate.

(c)

Interpretation Introduction

Interpretation: The names for the given ionic compounds are to be examined and if the names are incomplete then the complete name is to be given.

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 $\text{Name}\text{of}\text{first}\text{element}+\text{Stem}\text{of}\text{second}\text{element}+\text{'}ide\text{'}$

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 97A

As lead exists in +2 and +4 oxidation state. The compound formulas are $\text{PbO}$ and ${\text{PbO}}_2$ and the name of the compound is given as lead(II) oxide and lead(IV) oxide.

Explanation of Solution

The given name of ionic compound is lead oxide. As lead exists in +2 and +4 oxidation state. The compound formulas are $\text{PbO}$ and ${\text{PbO}}_2$ .

Thus, the name of the compound is given as lead(II) oxide and lead(IV) oxide.

(d)

Interpretation Introduction

Interpretation: The names for the given ionic compounds are to be examined and if the names are incomplete then the complete name is to be given.

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 $\text{Name}\text{of}\text{first}\text{element}+\text{Stem}\text{of}\text{second}\text{element}+\text{'}ide\text{'}$

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 97A

As manganese exists in +2, +3 and +4 oxidation state. The compound formulas are ${\text{MnF}}_2$ , ${\text{MnF}}_3$ , and ${\text{MnF}}_4$ .and the name of the compound is given as manganese(II) fluoride, manganese(III) fluoride and manganese(IV) fluoride.

Explanation of Solution

The given name of ionic compound is manganese fluoride. As manganese exists in +2, +3 and +4 oxidation state. The compound formulas are ${\text{MnF}}_2$ , ${\text{MnF}}_3$ , and ${\text{MnF}}_4$ .

Thus, the name of the compound is given as manganese(II) fluoride, manganese(III) fluoride and manganese(IV) fluoride.