Chapter 8, Problem 8A.2BST

Interpretation Introduction

Interpretation:

The element (E) in period three, which forms amphoteric oxide with formula ${\text{E}}_{\text{2}}{\text{O}}_{\text{3}}$ has to be identified.

Concept Introduction:

Amphoteric oxide:  Elements with intermediate ionization energies such as beryllium, boron, aluminum and the metalloids forms amphoteric oxides.  Amphoteric oxides react with both acids and bases but do not react or dissolve in water.  Amphoteric oxides are soluble in both acidic and basic solution.