Question: A The powder X-ray diffraction pattern of copper was collected using Cu Ka radiation (a = 1.5418 ). The first five peaks are at 20

$A The powder X-ray diffraction pattern of copper was collected using Cu$ A

The powder X-ray diffraction pattern of copper was collected using Cu Ka radiation (a = 1.5418 ). The first five peaks are at 20 = 43.36, 50.50, 74.20, 90.04 and 95.26. (a) Determine the lattice type that Cu crystallises in. [4 marks] (b) Calculate the unit cell parameter, a, for Cu. [4 marks] (C) Assuming the copper atoms are spheres that touch each other in the lattice, calculate the radius of a Cu atom. [2 marks]

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