A small bar of an unknown metal was left on the bench. The density of the metal is 11.5 g/cm3. An X-ray diffraction experiment was conducted to measures the edge of the face-centered cubic unit cell as 4.06 x 10-10 m. Find the atomic weight of this metal and tentatively identify this metal.
Mass of unit cell
Since there are units per unit cell, the mass of one atom is mass of unit cell/ 4. Converting the mass of one atom to the mass of 1 mole therefore is;