Q4) 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.
(a) Index (i.e., give h, k, and l indices) for each of these peaks [3 marks].
(b) Determine the interplanar spacing for one of the peaks [3 marks].
(c) Using any peak peak, determine the atomic radius for W [2 marks]
Intensity
0.0
20.0
40.0
60.0
80.0 100.0
Diffraction angle 2$\theta$
