Chapter 21, Problem 21.25E

Interpretation Introduction

Interpretation:

The angle of the first- and second-order diffractions of X- rays having wavelength $1.5511\stackrel{\circ }{\text{A}}$ by a crystal of uranium dioxide is to be determined.

Concept introduction:

A unit cell of the crystal is the three-dimensional arrangement of the atoms present in the crystal. The unit cell is the smallest and simplest unit of the crystal which on repetition forms an entire crystal. The parameters of a crystal can be obtained experimentally by X-ray diffraction technique.