Chapter 8, Problem 8.1P

Interpretation Introduction

Interpretation:

The molecules with bond angle of ${\text{90}}^{\text{°}}$ have to be given.

Answer to Problem 8.1P

${\text{TeF}}_{\text{6}}{\text{,XeF}}_{\text{4}\text{.}}$ are the molecules with bond angle of ${\text{90}}^{\text{°}}.$

Hence, options (a), (d) are the correct.

Explanation of Solution

Reasons of the correct answer:

The structure of ${\text{TeF}}_{\text{6}}$ is,

The structure of ${\text{XeF}}_{\text{4}\text{.}}$ is,

The structure of ${\text{TeF}}_{\text{6}}{\text{,XeF}}_{\text{4}\text{.}}$ is octahedral and square planar respectively.  Thus, they have bond angle of ${\text{90}}^{\text{°}}\text{.}$

Hence, options (a), (d) are the correct answer.

Reasons for the incorrect answer:

The structure of ${\text{AsBr}}_{\text{5}}$ is

The structure of ${\text{GaI}}_{\text{3}}$ is,

The structure of ${\text{AsBr}}_{\text{5}}$ ${\text{GaI}}_{\text{3}}$ are trigonal bipyramidal and trigonal planar respectively and thus have a bond angle of ${\text{120}}^{\text{o}}\text{.}$  Hence options (c), (b) are the incorrect.