Solid State

Calculate the molar mass of an element having density \(21 \mathrm{~g} \mathrm{~cm}^{-3}\) that forms fcc unit cell \(\left[\mathrm{a}^3 \cdot \mathrm{N}_{\mathrm{A}}=36 \mathrm{~cm}^3 \mathrm{~mol}^{-1}\right]\)