The metal MIhas an FCC crystal structure. If the angle of diffraction for the (220) set of planes occurs at 69.22°(first-order reflection) when monochromatic x-radiation having a wavelength of 0.1542 nm is used, compute (a) the interplanar spacing for this set of planes,(b) the lattice parameter (the cubic edge length)a, (c) atomic radius for aMIatom.

Give detailed Solution with explanation needed..don't give Handwritten answer

(c) Three-dimensional hexagonal boron nitride is made up of sheets of the two- dimensional material described above. X-ray diffraction is used to measure the distance between adjacent rows of boron atoms in the layers, and the distance between the two-dimensional sheets. i. Draw diagrams to show how a single-crystal sample of BN must be orientated with respect to the incident and scattered beams in order to make these measurements.

1. The co-ordination number of metal crystallizing in a hexagonal close packed structure is (a) 12 (b) 4 (c) 8 (d) 6