Chapter 3, Problem 47P

Interpretation Introduction

(a)

Interpretation:

The chemical formula of the ionic compound formed from calcium (Ca) and sulfur (S) should be determined.

Concept Introduction:

Charge of an ion:

The group number of a main group element can be used to determine the charge on an ion derived from that element:

For elements in groups 1A, 2A, and 3A, the group number is the charge on the cations they make. For elements in groups 6A and 7A, the anion charge = 8 − (the group number).

Ionic compounds:

Anions and cations are attracted to each other via ionic bonds and form ionic compounds. The overall charge of an ionic compounds is zero (sum of the charge of each ion involved must be zero).

Interpretation Introduction

(b)

Interpretation:

The chemical formula of the ionic compound formed from aluminum (Al) and bromine (Br) should be determined.

Concept Introduction:

Charge of an ion:

The group number of a main group element can be used to determine the charge on an ion derived from that element:

For elements in groups 1A, 2A, and 3A, the group number is the charge on the cations they make. For elements in groups 6A and 7A, the anion charge = 8 − (the group number).

Ionic compounds:

Anions and cations are attracted to each other via ionic bonds and form ionic compounds. The overall charge of an ionic compounds is zero (sum of the charge of each ion involved must be zero).

Interpretation Introduction

(c)

Interpretation:

The chemical formula of the ionic compound formed from lithium (Li) and iodine (I) should be determined.

Concept Introduction:

Charge of an ion:

The group number of a main group element can be used to determine the charge on an ion derived from that element:

For elements in groups 1A, 2A, and 3A, the group number is the charge on the cations they make. For elements in groups 6A and 7A, the anion charge = 8 − (the group number).

Ionic compounds:

Anions and cations are attracted to each other via ionic bonds and form ionic compounds. The overall charge of an ionic compounds is zero (sum of the charge of each ion involved must be zero).

Interpretation Introduction

(d)

Interpretation:

The chemical formula of the ionic compound formed from nickel (Ni) and chlorine (Cl) should be determined.

Concept Introduction:

Charge of an ion:

The group number of a main group element can be used to determine the charge on an ion derived from that element:

For elements in groups 1A, 2A, and 3A, the group number is the charge on the cations they make. For elements in groups 6A and 7A, the anion charge = 8 − (the group number).

Ionic compounds:

Anions and cations are attracted to each other via ionic bonds and form ionic compounds. The overall charge of an ionic compounds is zero (sum of the charge of each ion involved must be zero).

Interpretation Introduction

(e)

Interpretation:

The chemical formula of the ionic compound formed from sodium (Na) and selenium (Se) should be determined.

Concept Introduction:

Charge of an ion:

The group number of a main group element can be used to determine the charge on an ion derived from that element:

For elements in groups 1A, 2A, and 3A, the group number is the charge on the cations they make. For elements in groups 6A and 7A, the anion charge = 8 − (the group number).

Ionic compounds:

Anions and cations are attracted to each other via ionic bonds and form ionic compounds. The overall charge of an ionic compounds is zero (sum of the charge of each ion involved must be zero).