Question 3. (10pts) The following table lists diffraction angles for FCC aluminum (AI) when monochromatic X-rays of 0.154nm are used. The atomic radius of Al is 0.143nm. Plane Diffraction Angle (29) 38.6 (111) (200) (220) 44.8 65.2 (311) 78.3 Part A 5pts Determine the interplanar spacing for the (220) and (311). Part B. 5 pts Aluminum Unit Cell. a) Draw the Al unit cell including lattice parameter and atomic positions. b) Draw and clearly label the (200) and the [111] crystallographic features in a separate schemati unit cell