Chapter 2, Problem 78AE

(a)

Interpretation Introduction

Interpretation:The name and the formula of ionic compound formed between $\text{Ca}$ and $\text{N}$ are to be stated.

Concept introduction:The naming of the compounds is dependent on the type of bond that is present between their atoms or molecules. For ionic compounds, the oxidation state of the metalsinvolvedfor which variable oxidation states are possible is mentioned in their names. In binary ionic compounds, the cation and anion are most likely to form by the atom combine.

Answer to Problem 78AE

The name and the formula of ionic compound formed between $\text{Ca}$ and $\text{N}$ are calcium nitride and ${\text{Ca}}_{\text{3}}{\text{N}}_{\text{2}}$ respectively.

Explanation of Solution

The element $\text{Ca}$ belongs to group $\text{2A}$. So, its most common ion is ${\text{Ca}}^{\text{2+}}$. The element $\text{N}$ belongs to group $\text{5A}$. The ion that is most commonly formed by it has the charge of $\left(5-8\right)=-3$ that is ${\text{N}}^{3-}$. The name of the anion is nitride.

Thus, the formula of the compound is ${\text{Ca}}_{\text{3}}{\text{N}}_{\text{2}}$ and name of the compound is calcium nitride.

(b)

Interpretation Introduction

Interpretation:The name and the formula of ionic compound formed between $\text{K}$ and $\text{O}$ are to be stated.

Concept introduction:The naming of the compounds is dependent on the type of bond that is present between their atoms or molecules. For ionic compounds, the oxidation state of the metalsinvolved for which variable oxidation states are possible is mentioned in their names. In binary ionic compounds, the cation and anion are most likely to form by the atom combine.

Answer to Problem 78AE

The name and the formula of ionic compound formed between $\text{K}$ and $\text{O}$ are potassium oxide and ${\text{K}}_2\text{O}$ respectively.

Explanation of Solution

The element $\text{K}$ belongs to group $\text{1A}$. So, its most common ion is ${\text{K}}^{\text{+}}$. The element $\text{O}$ belongs to group $\text{6A}$. The ion that is most commonly formed by it has the charge of $\left(6-8\right)=-2$ that is ${\text{O}}^{2-}$. The name of the anion is oxide.

Thus, the formula of the compound is ${\text{K}}_2\text{O}$ and name of the compound is potassium oxide.

(c)

Interpretation Introduction

Interpretation:The name and the formula of ionic compound formed between $\text{Rb}$ and $\text{F}$ are to be stated.

Concept introduction:The naming of the compounds is dependent on the type of bond that is present between their atoms or molecules. For ionic compounds, the oxidation state of the metalsinvolved for which variable oxidation states are possible is mentioned in their names. In binary ionic compounds, the cation and anion are most likely to form by the atom combine.

Answer to Problem 78AE

The name and the formula of ionic compound formed between $\text{Rb}$ and $\text{F}$ are rubidium fluoride and $\text{RbF}$ respectively.

Explanation of Solution

The element $\text{Rb}$ belongs to group $\text{1A}$. So, its most common ion is ${\text{Rb}}^{\text{+}}$. The element $\text{F}$ belongs to group $\text{7A}$. The ion that is most commonly formed by it has the charge of $\left(7-8\right)=-1$ that is ${\text{F}}^{-}$. The name of the anion is fluoride.

Thus, the formula of the compound is $\text{RbF}$ and name of the compound is rubidium fluoride.

(d)

Interpretation Introduction

Interpretation: The name and the formula of ionic compound formed between $\text{Mg}$ and $\text{S}$ are to be stated.

Concept introduction:The naming of the compounds is dependent on the type of bond that is present between their atoms or molecules. For ionic compounds, the oxidation state of the metalsinvolved for which variable oxidation states are possible is mentioned in their names. In binary ionic compounds, the cation and anion are most likely to form by the atom combine.

Answer to Problem 78AE

The name and the formula of ionic compound formed between $\text{Mg}$ and $\text{S}$ are magnesium sulfide and $\text{MgS}$ respectively.

Explanation of Solution

The element $\text{Mg}$ belongs to group $\text{2A}$. So, its most common ion is ${\text{Mg}}^{\text{2+}}$. The element $\text{S}$ belongs to group $\text{6A}$. The ion that is most commonly formed by it has the charge of $\left(6-8\right)=-2$ that is ${\text{S}}^{2-}$. The name of the anion is sulfide.

Thus, the formula of the compound is $\text{MgS}$ and name of the compound is magnesium sulfide.

(e)

Interpretation Introduction

Interpretation: The name and the formula of ionic compound formed between $\text{Ba}$ and $\text{I}$ are to be stated.

Concept introduction:The naming of the compounds is dependent on the type of bond that is present between their atoms or molecules. For ionic compounds, the oxidation state of the metalsinvolved for which variable oxidation states are possible is mentioned in their names. In binary ionic compounds, the cation and anion are most likely to form by the atom combine.

Answer to Problem 78AE

The name and the formula of ionic compound formed between $\text{Ba}$ and $\text{I}$ are barium iodide and ${\text{BaI}}_{\text{2}}$ respectively.

Explanation of Solution

The element $\text{Ba}$ belongs to group $\text{2A}$. So, its most common ion is ${\text{Ba}}^{\text{2+}}$. The element $\text{I}$ belongs to group $\text{7A}$. The ion that is most commonly formed by it has the charge of $\left(7-8\right)=-1$ that is ${\text{I}}^{-}$. The name of the anion is iodide.

Thus, the formula of the compound is ${\text{BaI}}_{\text{2}}$ and name of the compound is barium iodide.

(f)

Interpretation Introduction

Interpretation: The name and the formula of ionic compound formed between $\text{Al}$ and $\text{Se}$ are to be stated.

Concept introduction:The naming of the compounds is dependent on the type of bond that is present between their atoms or molecules. For ionic compounds, the oxidation state of the metalsinvolved for which variable oxidation states are possible is mentioned in their names. In binary ionic compounds, the cation and anion are most likely to form by the atom combine.

Answer to Problem 78AE

The name and the formula of ionic compound formed between $\text{Al}$ and $\text{Se}$ are aluminum selenide and ${\text{Al}}_2{\text{Se}}_3$ respectively.

Explanation of Solution

The element $\text{Al}$ belongs to group $\text{3A}$. So, its most common ion is ${\text{Al}}^{\text{3+}}$. The element $\text{Se}$ belongs to group $\text{6A}$. The ion that is most commonly formed by it has the charge of $\left(6-8\right)=-2$ that is ${\text{Se}}^{2-}$. The name of the anion is selenide.

Thus, the formula of the compound is ${\text{Al}}_2{\text{Se}}_3$ and name of the compound is aluminum selenide.

(g)

Interpretation Introduction

Interpretation: The name and the formula of ionic compound formed between $\text{Cs}$ and $\text{P}$ are to be stated.

Concept introduction:The naming of the compounds is dependent on the type of bond that is present between their atoms or molecules. For ionic compounds, the oxidation state of the metalsinvolved for which variable oxidation states are possible is mentioned in their names. In binary ionic compounds, the cation and anion are most likely to form by the atom combine.

Answer to Problem 78AE

The name and the formula of ionic compound formed between $\text{Cs}$ and $\text{P}$ are cesium phosphide and ${\text{Cs}}_3\text{P}$ respectively.

Explanation of Solution

The element $\text{Cs}$ belongs to group $\text{1A}$. So, its most common ion is ${\text{Cs}}^{\text{+}}$. The element $\text{P}$ belongs to group $\text{5A}$. The ion that is most commonly formed by it has the charge of $\left(5-8\right)=-3$ that is ${\text{P}}^{3-}$. The name of the anion is phosphide.

Thus, the formula of the compound is ${\text{Cs}}_3\text{P}$ and name of the compound is cesium phosphide.

(h)

Interpretation Introduction

Interpretation: The name and the formula of ionic compound formed between $\text{In}$ and $\text{Br}$ are to be stated.

Concept introduction:The naming of the compounds is dependent on the type of bond that is present between their atoms or molecules. For ionic compounds, the oxidation state of the metalsinvolved for which variable oxidation states are possible is mentioned in their names. In binary ionic compounds, the cation and anion are most likely to form by the atom combine.

Answer to Problem 78AE

The name and the formula of ionic compound formed between $\text{In}$ and $\text{Br}$ are indium bromide and ${\text{InBr}}_{\text{3}}$ respectively.

Explanation of Solution

The element $\text{In}$ belongs to group $\text{3A}$. So, its most common ion is ${\text{In}}^{\text{3+}}$. The element $\text{Br}$ belongs to group $\text{7A}$. The ion that is most commonly formed by it has the charge of $\left(7-8\right)=-1$ that is ${\text{Br}}^{-}$. The name of the anion is bromide.

Thus, the formula of the compound is ${\text{InBr}}_{\text{3}}$ and name of the compound is indium bromide.