Crystal Structure

Physics SSS1 Second Term


Crystal Structure

Performance Objectives

Students should be able to:

  1. Examine the arrangement of atoms in the crystal structure
  2. Distinguish between crystalline and amorphous substances


Crystal structure

In a crystal, atoms are arranged in straight rows in a three-dimensional periodic pattern. A small part of the crystal that can be repeated to form the entire crystal is called a unit cell.

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Asymmetric     unit

Primitive     unit cell

Conventional     unit cell