Chapter 2.6, Problem 2.11Q

(a)

Interpretation Introduction

Interpretation:

The number of protons and electrons in ${\text{O}}^{\text{2-}}$ ion has to be determined.

Concept Introduction:

• The number of protons or electron is called as atomic number.
• Protons are located in atomic nucleus of an atom.  Protons are positively charged one.

(b)

Interpretation Introduction

Interpretation:

The number of protons and electrons in ${\text{Mg}}^{2+}$ has to be given.

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

The number of protons and electrons in ${\text{Fe}}^{3+}$ has to be given.

Concept Introduction:

Refer to part (a).