Chapter 14, Problem 14.104P

(a)

Interpretation Introduction

Interpretation:

Reason for the stable Xenon fluorides have an even number of Fluorine atoms has to be explained.

Concept Introduction:

Electronic configuration:

The arrangement of electrons in orbitals of an atom is known as electronic configuration.

In the electronic configuration, the electrons are arranged in the increasing order in orbitals.

(b)

Interpretation Introduction

Interpretation:

Reason for the ionic species ${\text{XeF}}_{\text{3}}^{\text{+}}$ and ${\text{XeF}}_{\text{7}}^{\text{-}}$ have odd numbers of $\text{F}$ atoms has to be explained.

Concept Introduction:

Electronic configuration:

The arrangement of electrons in orbitals of an atom is known as electronic configuration.

In the electronic configuration, the electrons are arranged in the increasing order in orbitals.

(c)

Interpretation Introduction

Interpretation:

The shape of ${\text{XeF}}_{\text{3}}^{\text{+}}$ has to be predicted.

Concept Introduction:

Valence shell electron pair repulsion (VSEPR) theory:

The geometry of molecule is predicted by valence shell electron pair repulsion (VSEPR) theory, this theory state that the repulsion force between lone pair and bond pair electrons of central atom is given by,

Lone pair-lone pair > lone pair - bond pair > bond pair - bond pair

From the order of repulsion forces and number of lone pair electrons, bond pair electrons that are present in the central atom, the geometry of molecule is assigned in the below manner,

Figure 1