Chapter 21, Problem 21.52SP

Interpretation Introduction

Interpretation:

The unit cell of potassium crystal has to be drawn.  Also the problem in drawing electron-dot structure of potassium crystal has to be explained.

Concept introduction:

Unit cell:

Unit cell is defined as a group of small atoms with total symmetry of a crystal and whole lattice can be raised by repetitions in $\text{3D}$

Body-centered cubic unit cell:

In body centered cubic unit cell atoms occupy eight corners of cube and one atom at the center.  Thus, atom in the corner is shared by eight cubic unit cell.