Chapter 12, Problem 102E

Interpretation Introduction

Interpretation:

Different categories of crystalline solids must be explained.

Concept introduction:

Solids are classified into two categories: Crystalline and amorphous according to the range of order present in the arrangement of constituent particles present in them.

Crystalline solids have a regular arrangement of constituent particles which repeats itself over the whole crystal that is they have long range order. Examples of crystalline solids include NaCl and quartz.

Amorphous solids have short range order which mean that regular and repeating arrangement of constituent particles is observed over short distances in the solid. Overall pattern of arrangement of constituent particles is disordered. Examples include glass, rubber and plastic.

Crystalline solids can be further classified on the basis of intermolecular forces into:

• Atomic solids
• Molecular solids
• Ionic solids
• Covalent solids
• Metallic solids