5. (10 points). The figure below shows the first five peaks of the x-ray diffraction pattern for tungsten (W), which has a BCC crystal structure. Monochromatic x-radiation having a wavelength of 0.1542 nm was used to determine such a crystal structure. The peaks are already indexed for your convenience. Intensity (110) (211) (200) (310) (220) 0.0 20.0 40.0 60.0 80.0 100.0 Diffraction angle 2 Based on the above information, 5.1 The atomic radius (R) for tungsten using the (110) plane is a. R=0.1374 nm c. R=0.2769 nm b. R=1.2512 mm c. None of the above 5.2 Compare R above with the value presented in Table 3.1 so that a. error 0.22% c. error=0.40% b. error=0.12% c. None of the above