Chapter 2, Problem 2.39QP

(a)

Interpretation Introduction

Interpretation: The ions that have the same number of electrons as an atom of argon are to be stated.

Concept introduction: The addition of electrons in the valence shell which is the outermost gives the electronic configuration of anions and for cations, there is a removal electrons firstly from the outermost p orbital, then from s orbital and then at last from the d orbital. Argon is a noble gas in Group 18 that has electronic configuration $\left[{\text{1s}}^{\text{2}}{\text{2s}}^{\text{2}}{\text{2p}}^{\text{6}}{\text{3s}}^{\text{2}}{\text{3p}}^{\text{6}}\right]$ represents 3 fully filled shells.

To determine: If the given ion, ${\text{S}}^{\text{2-}}$ has the same number of electrons as an atom of Argon.

(b)

Interpretation Introduction

To determine: If the given ion, ${\text{P}}^{\text{3-}}$ has the same number of electrons as an atom of Argon.

(c)

Interpretation Introduction

To determine: If the given ion, ${\text{Be}}^{\text{2+}}$ has the same number of electrons as an atom of Argon.

(d)

Interpretation Introduction

To determine: If the given ion, ${\text{Ca}}^{\text{2+}}$ has the same number of electrons as an atom of Argon.