Chapter U1, Problem 9RE

Interpretation Introduction

(a)

Interpretation:

Type of bonding in AlCl₃ and its chemical name needs to be determined. Also, whether it can conduct electricity or not need to be determined.

Concept introduction:

There is a force of attraction between atoms which keeps them together. This force of attraction is called chemical bond. Chemical bonds hold the atoms together. There are four types of bonds:

1. Ionic bond
2. Molecular covalent bond
3. Metallic bond
4. Network covalent bond

Answer to Problem 9RE

AlCl₃ - ionic bond, aluminium chloride, it will conduct electricity when dissolved in water.

Explanation of Solution

AlCl₃ is an ionic compound as it contains a metal and a nonmetal. It is called aluminium chloride. It has ionic bond between aluminium and chlorine atoms. The valence electrons are transferred from one metal atom to nonmetal atoms. It can conduct electricity when dissolved in water as the metal and nonmetal ions are free to move in solution.

Interpretation Introduction

(b)

Interpretation:

Type of bonding in O₂ and its chemical name needs to be determined. Also, whether it can conduct electricity or not need to be determined.

Concept introduction:

There is a force of attraction between atoms which keeps them together. This force of attraction is called chemical bond. Chemical bonds hold the atoms together. There are four types of bonds:

1. Ionic bond
2. Molecular covalent bond
3. Metallic bond
4. Network covalent bond

Answer to Problem 9RE

O₂ - molecular covalent bond, oxygen, it will not conduct electricity

Explanation of Solution

Oxygen gas is made of only oxygen atoms. Here, oxygen is a nonmetal. In O₂ molecule, the valence electrons are shared between two oxygen atoms. The bonding between two oxygen atoms is molecular covalent. Here the nucleus of one atom is attracted to valence electrons of another atom. It cannot conduct electricity because it does not contain any free electron or ion.

(c)

Interpretation Introduction

Interpretation:

Type of bonding in AgOH and its chemical name needs to be determined. Also, whether it can conduct electricity or not need to be determined.

Concept introduction:

There is a force of attraction between atoms which keeps them together. This force of attraction is called chemical bond. Chemical bonds hold the atoms together. There are four types of bonds:

1. Ionic bond
2. Molecular covalent bond
3. Metallic bond
4. Network covalent bond

Answer to Problem 9RE

AgOH - ionic bond, silver hydroxide, it will conduct electricity when dissolved in water.

Explanation of Solution

AgOH is an ionic compound as it contains a metal and a nonmetal. It is called silver hydroxide. It has ionic bond between silver ion and hydroxyl ion. The valence electrons are transferred from one metal atom to nonmetal atoms. It can conduct electricity when dissolved in water as the metal and nonmetal ions are free to move in aqueous solution.

(c)

Interpretation Introduction

Interpretation:

Type of bonding in Pt and its chemical name needs to be determined. Also, whether it can conduct electricity or not need to be determined.

Concept introduction:

There is a force of attraction between atoms which keeps them together. This force of attraction is called chemical bond. Chemical bonds hold the atoms together. There are four types of bonds:

1. Ionic bond
2. Molecular covalent bond
3. Metallic bond
4. Network covalent bond

Answer to Problem 9RE

Pt- metallic bond, platinum, it will conduct electricity.

Explanation of Solution

Platinum has metallic bond as it is made of metal atoms. The atoms are bonded by the attraction between the positively charged nucleus of one atom and negatively charged electrons around the nucleus of other atom. The valence electrons are free to move so it can conduct electricity.