Chapter 19, Problem 4RQ

Interpretation Introduction

Interpretation: The valence electron configuration for group $3\text{A}$ elements is to be stated. The change observed in the metallic character of group $3\text{A}$ elements as one goes down the group is to be stated. The difference between aluminum and boron is to be stated. The formulas of the compounds formed when aluminum reacts with the given elements are to be predicted.

Concept introduction: Group $3\text{A}$ elements are highly reactive metals. They form ionic compound by losing three valence electrons and contains ${\text{M}}^{3+}$ cation.

To determine: The valence electron configuration for group $3\text{A}$ elements; the change in metallic character of group $3\text{A}$ elements as one goes down the group; the difference between aluminum and boron; the formulas of the compounds formed when aluminum reacts with ${\text{F}}_{\text{2}},{\text{O}}_{\text{2}},\text{S}$ and ${\text{N}}_{\text{2}}$.