A. Determine the linear density for BCC lithium, which has a
lattice parameter of 0.35089 nm, in the [100], [110], and [111]
directions. Which of these directions is close packed?
B. Determine the planar density and packing fraction for BCC
lithium in the (100), (110), and (111) planes. Which, if any, of
these planes is close packed?
C. A diffracted x-ray beam is observed from the (220) planes of
iron at a 2θ angle of 99.1o when x-rays of 0.15418...