Chapter 9, Problem 9.20QE

Interpretation Introduction

Interpretation:

The elements that can form expanded valence shell molecules have to be determined. Also, the xenon compounds among ${\text{XeF}}_{\text{2}}$ and ${\text{XeF}}_{\text{4}}$ that have an expanded valence shell has to be explained.

Concept Introduction:

The octet rule is defined as the tendency of atoms to have eight electrons in their valence shell. When atoms have fewer than eight electrons, they tend to react and form more stable compounds. The octet rule does not consider $d$ or $f$ electrons. Only the $s$ and $p$ electrons are involved in the octet rule that makes it useful for the main group elements.