What is the number of unit cells present in a cubic pack crystal lattice having 4 atoms per unit cell and weighing 0.60 ~g (molar mass .60 ~g ~mol ⁻¹ ) ?

Step-by-step solution

Number of moles = 0.6 ~g 60 ~g ~mol ⁻¹ =0.01 ~mol Total number of atoms =0.01 6.022 10²³ Number of atoms per unit cell =4 (Given) Number of unit cells present in the given cubic crystal lattice aligned & = 0.01 6.022 10²³ 4 & =1.5 10²¹ unit cells aligned