Chemistry - Solid State Question with Solution | TestHub

$\begin{array}{rl}\text{ Vol. of metal }=\frac{\text{ Mass }}{\text{ Density }}=\frac{38.6\mathrm{g}}{19.3\mathrm{g}{\mathrm{cm}}^{-3}}& =2{\mathrm{cm}}^3\\ \text{ No. of unit cells in }38.6\mathrm{g}\text{ of noble metal }& =\frac{\text{ Total vol. of metal }}{\text{ Vol. of one unit cell }}\\ & =\frac{2{\mathrm{cm}}^3}{6.18\times 10^{-23}{\mathrm{cm}}^3}=3.236\times 10^{22}\end{array}$