2. Tungsten (W) has a high melting point and can be used in semiconductor processing. It has body-
centered cubic structure and the density is 19.25 g/cm3. Each W atom has a mass of 183.84 amu.
(I amu= 1.66xkg)
申論題內容
(a) Determine the lattice constant of the cubic unit cell. Express your answer in angstrom.