Chemistry - Solid State Question with Solution | TestHub

Density of the metal is given by $d=\frac{\text{Mass of one unit cell}}{\text{Volume of unit cell}}$.

Mass of one unit cell $=d\times V=2.5\times 10^{-22}$ g.

Number of unit cells in $1$ g of metal $=\frac{\text{Total mass}}{\text{Mass of one unit cell}}$.

Number of unit cells $=\frac{1}{2.5\times 10^{-22}}=4.0\times 10^{21}$.

Answer: $4.0\times 10^{21}$