Chapter 7, Problem 82A

(a)

Interpretation Introduction

Interpretation:

The name of ionic compound ${\text{K}}_2\text{O}$ needs to be determined.

Concept introduction:

Ionic bonds are formed when there is complete transfer of electrons from one atom to another. These atoms either loss or gain electrons to become negatively or positively charged ions. The forces of attraction between these ions cause the ionic bond formation. Ionic compounds are formed only when there is a balance between their charges.

Answer to Problem 82A

The name of the ionic compound ${\text{K}}_2\text{O}$ is potassium oxide.

Explanation of Solution

The ionic compound is ${\text{K}}_2\text{O}$.

As per naming convention the cation is to be named first and then anion.

Hence, K denotes potassium. Therefore cation is potassium.

Anion is Oxygen which should end with ‘ide’. Hence, it is oxide.

The compound ${\text{K}}_2\text{O}$ is named as potassium oxide.

(b)

Interpretation Introduction

Interpretation:

The name of ionic compound ${\text{CaCl}}_2$ needs to be determined.

Concept introduction:

Ionic bonds are formed when there is complete transfer of electrons from one atom to another. These atoms either lose or gain electrons to become negatively or positively charged ions. The forces of attraction between these ions cause the ionic bond formation. Ionic compounds are formed only when there is a balance between their charges.

Answer to Problem 82A

The name of the ionic compound ${\text{CaCl}}_2$ is Calcium chloride.

Explanation of Solution

The ionic compound is ${\text{CaCl}}_2$.

As per naming convention the cation is to be named first and then anion.

Hence, Ca denotes Calcium. Therefore cation is named as Calcium.

Anion is Chlorine which should end with ‘ide’. Hence, it is chloride

The compound ${\text{CaCl}}_2$ is named as Calcium chloride.

(c)

Interpretation Introduction

Interpretation:

The name of ionic compound ${\text{Mg}}_{\text{3}}{\text{N}}_{\text{2}}$ needs to be determined.

Concept introduction:

Ionic bonds are formed when there is complete transfer of electrons from one atom to another. These atoms either lose or gain electrons to become negatively or positively charged ions. The forces of attraction between these ions cause the ionic bond formation. Ionic compounds are formed only when there is a balance between their charges.

Answer to Problem 82A

The name of the ionic compound ${\text{Mg}}_{\text{3}}{\text{N}}_{\text{2}}$ is Magnesium Nitride.

Explanation of Solution

The ionic compound is ${\text{Mg}}_{\text{3}}{\text{N}}_{\text{2}}$.

As per naming convention the cation is to be named first and then anion.

Hence, Mg denotes Magnesium. Therefore cation is Magnesium.

Anion is Nitrogen which should end with ‘ide’. Hence, it is Nitride.

The compound ${\text{Mg}}_{\text{3}}{\text{N}}_{\text{2}}$ is named as Magnesium Nitride.

Interpretation Introduction

(d)

Interpretation:

The name of ionic compound $\text{NaClO}$ needs to be determined.

Concept introduction:

Ionic bonds are formed when there is complete transfer of electrons from one atom to another. These atoms either lose or gain electrons to become negatively or positively charged ions. The forces of attraction between these ions cause the ionic bond formation. Ionic compounds are formed only when there is a balance between their charges.

Answer to Problem 82A

The name of ionic compound $\text{NaClO}$ is Sodium Hypochlorite.

Explanation of Solution

The ionic compound is $\text{NaClO}$.

As per naming convention the cation is to be named first and then anion.

Hence, Na denotes Sodium. Therefore, cation is Sodium.

Anion is ${\text{ClO}}^{-}$ which has chlorine and oxygen. Its name is hypochlorite ion.

The compound $\text{NaClO}$ is named as Sodium Hypochlorite.

Interpretation Introduction

(e)

Interpretation:

The name of ionic compound ${\text{KNO}}_3$ needs to be determined.

Concept introduction:

Ionic bonds are formed when there is complete transfer of electrons from one atom to another. These atoms either lose or gain electrons to become negatively or positively charged ions. The forces of attraction between these ions cause the ionic bond formation. Ionic compounds are formed only when there is a balance between their charges.

Answer to Problem 82A

The name of ionic compound ${\text{KNO}}_3$ is potassium nitrate.

Explanation of Solution

The ionic compound is ${\text{KNO}}_3$.

As per naming convention the cation is to be named first and then anion.

Hence, K denotes potassium. Therefore cation is potassium.

Anion is ${\text{NO}}_3{}^{-}$ that has nitrogen and oxygen. Hence, it is named as nitrate.

The compound ${\text{KNO}}_3$ is named as potassium nitrate.