Chapter 19, Problem 9RQ

Interpretation Introduction

Interpretation: The valence electron configuration for halogens is to be stated. The reason for the increase in the melting and boiling point from ${\text{F}}_{\text{2}}$ to ${\text{I}}_{\text{2}}$. Two reasons are to be stated for high reactivity of ${\text{F}}_{\text{2}}$ among other halogens. The reason for the fact, the boiling point of $\text{HF}$ is much higher than the boiling points of $\text{HCl,}\text{HBr}$, and $\text{HI}$. The definition of halide ions and explanation for the stability of halide ions is to be stated. The compounds of chlorine that have $-\text{1,}\text{+1,}\text{+3,}\text{+5}$ and $\text{+7}$ oxidation states are to be stated.

Concept introduction: Halogen elements are highly reactive. All are nonmetals. They form hydrides when react with hydrogen.

To determine: The valence electron configuration for halogens; the reason for the increase in the melting and boiling point from ${\text{F}}_{\text{2}}$ to ${\text{I}}_{\text{2}}$; two reasons for high reactivity of ${\text{F}}_{\text{2}}$ among other halogens; the reason for the fact, the boiling point of $\text{HF}$ is much higher than the boiling points of $\text{HCl,}\text{HBr}$, and $\text{HI}$; the definition of halide ions and explanation for the stability of halide ions; the compounds of chlorine that have $-\text{1,}\text{+1,}\text{+3,}\text{+5}$ and $\text{+7}$ oxidation states.