Chapter 9, Problem 98A

(a)

Interpretation Introduction

Interpretation: The incorrectness in the given formula is to be stated and the correct formula 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 98A

The formula is correct, and its name is caesium chloride.

Explanation of Solution

The given compound is ${\text{CsCl}}_2$ . It is composed of ${\text{Cs}}^{+}$ and ${\text{Cl}}^{-}$ . The formula is correct, and its name is caesium chloride.

(b)

Interpretation Introduction

Interpretation: The incorrectness in the given formula is to be stated and the correct formula 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 98A

The formula is wrong as the neon is inert gas and it will to not form compounds with metal (lithium).

Explanation of Solution

The given compound is $\text{LiNe}$ . It is composed of lithium and neon. It is not possible as the neon is inert gas and it will to not form compounds with metal (lithium). The formula is wrong.

(c)

Interpretation Introduction

Interpretation: The incorrectness in the given formula is to be stated and the correct formula 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 98A

The formula is incorrect as both ions have same charge so it would be $\text{ZnO}$ and its correct name is zinc oxide.

Explanation of Solution

The given compound is ${\text{ZnO}}_2$ . It is composed of ${\text{Zn}}^{2+}$ and ${\text{O}}^{2-}$ . The formula is incorrect as both ions have same charge so it would be $\text{ZnO}$ and its correct name is zinc oxide.

(d)

Interpretation Introduction

Interpretation: The incorrectness in the given formula is to be stated and the correct formula 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 98A

The formula is incorrect as both ions have same charge so it would be $\text{BaS}$ and its correct name is barium sulfide.

Explanation of Solution

The given compound is ${\text{Ba}}_{\text{2}}{\text{S}}_{\text{2}}$ . It is composed of ${\text{Ba}}^{2+}$ and ${\text{S}}^{2-}$ . The formula is incorrect as both ions have same charge so it would be $\text{BaS}$ and its correct name is barium sulfide.