The unit cell of an element of atomic mass 108u and density 10.5 g cm-3 is a cube with edge length, 409 pm. Find the type of unit cell of the crystal. [Given : Avogadro's constant = 6.023 1023 mol-1]
We know that Z =
= = 4
So it forms cubic- closed packed (ccp) lattice or fcc structure.