Question: please ans within 30mins 2. The sine values calculated from the peak positions of an X-ray powder diffractogram of an element were as follows: 0.120,0.238,

please ans within 30mins 2. The sine values calculated from the

please ans within 30mins

2. The sine values calculated from the peak positions of an X-ray powder diffractogram of an element were as follows: 0.120,0.238, 0.357, 0.475, 0.593, 0.711 and 0.830. Copper Ka (2.-1.54 A) was used. Determine the crystal structure, the miller indices corresponding to the observed peaks and the lattice parameter. What is the minimum number of reflections you need to ascertain this structure and why? It is known that the element belongs to a cubic crystal system family. [20 marks]

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