Question

What is Z Value in Crystallography?

Answer 1

Crystallography:

• Crystallography is the branch of science that is concerned with the structure and properties of crystals.
• Z value in crystallography can be referred to as the number of molecules (or formula units) present in the unit cell.
• Z value can be obtained by the given formula: $\mathrm{Z}=\frac{(\mathrm{N}\times \mathrm{V}\times \mathrm{D})}{\mathrm{M}}$

Where $\mathrm{N}$= Avogadro number

$\mathrm{V}$= Volume of the unit cell

$\mathrm{D}$= Specific gravity(density) of the compound

$\mathrm{M}$= Sum of the atomic weights of the atoms contained in the unit formula.