Calculate the density of metal having volume of unit cell $$64 \times 10^{-24} \mathrm{~cm}^3$$ and molar mass of metal $$192 \mathrm{~g} \mathrm{~mol}^{-1}$$ containing 4 particles in unit cell.

Calculate the number of atoms in 5 gram metal that crystallises to form simple cubic unit cell structure having edge length $$336 \mathrm{~pm}$$. (Density of metal $$=9.4 \mathrm{~g} \mathrm{~cm}^{-3}$$ )

Identify the type of unit cell that has particles at the centre of each face in addition to the particles at eight corners of a cube?

How many atoms of niobium are present in $$2.43 \mathrm{~g}$$ if it forms bcc structure with density $$9 \mathrm{~g} \mathrm{~cm}^{-3}$$ and volume of unit cell $$2.7 \times 10^{-23} \mathrm{~cm}^3$$ ?