Chemistry - Solid State Question with Solution | TestHub

No. of atoms per bcc type of unit cell, $\mathrm{n}=2$ Mass of bcc unit cell $=$ Mass of two atoms $\begin{array}{rl}\therefore \text{ Mass of bcc unit cell of }\mathrm{Na}& =3.819\times 10^{-23}\times 2\\ & =7.638\times 10^{-23}\mathrm{g}\end{array}$