Chapter 18, Problem 18.62SP

Interpretation Introduction

Interpretation:

The given oxides has to be arranged in order of increasing covalent character.

Concept Introduction:

Oxides can be classified into acidic, basic or amphoteric.

• Basic oxides are ionic formed by metal.  Water soluble basic oxide such as ${\text{Li}}_{\text{2}}\text{O}$ and ${\text{Na}}_{\text{2}}\text{O}$ reacts with water to gives ${\text{OH}}^{\text{-}}$ ions.
• Acidic oxides are covalent and they formed by non-metals.  Water soluble acid oxides such as ${\text{N}}_{\text{2}}{\text{O}}_{\text{5}}$ and ${\text{SO}}_{\text{3}}$ dissolved by reacts with water to gives ${\text{H}}^{\text{+}}$ ions.
• Amphoteric oxides act as both acids and bases and dissolves both strong acid and in strong base but insoluble in water.

Covalent compound: The chemical bond in which two atoms of the molecule share a pair of electrons with each other called polar covalent bond.  A covalent character increases from left to right and from bottom to top in the periodic table.