Determine the expected diffraction angle for the first-order reflection from the (310) set of planes for BCC chromium when monochro- matic radiation of wavelength 0.0711 nm is used. Wuuuu Figure 3.24 Diffraction pattern for powdered tungsten. (Courtesy of Wesley L. Holman.) Intensity 0.0 20.0 40.0 60.0 80.0 100.0 Diffraction angle 20 Figure 3.24 shows the first five peaks of the X-ray diffraction pattern for tungsten, which has a BCC crystal structure; monochromatic X-radiation having a wavelength of 0.1542 nm was used. (a) Index (i.e., give h, k, and I indices) for each of these peaks. (b) Determine the interplanar spacing for each of the peaks (c) For each peak, determine the atomic ra- dius for W and compare these with the value presented in Table 3.1