1.(a) Derive Linear density expressions for FCC [100] and [111]directions in terms of the atomic radius R.
(b) Compute and compare linear density values for these same twoplanes for copper.
2.Calculate the radius of a palladium atom, given that Pd has an FCCcrystal structure, a density of 12.0 g/cm^3 , and an atomic weightof 106.4 g/mol.