Chemistry - Solid State Question with Solution | TestHub

A crystalline solid of a pure substance has a face-centred cubic structure with a cell edge of$400\mathrm{ }\mathrm{pm}$. If the density of the substance in the crystal is$8 \mathrm{g}\mathrm{ }{\mathrm{cm}}^{-3},\mathrm{ }$then the number of atoms present in$256 \mathrm{g}$of the crystal$\mathrm{is}\mathrm{ }\mathrm{N}\mathrm{ }\times \mathrm{ }{10}^{24}$. The value of$\mathrm{N}$is