Question: i need it asap 4.a) b) c) d) Distinguish between a unit cell and a crystal. Prove that for a FCC lattice structure Prove that

i need it asap i need it asap 4.a) b) c) d) Distinguish between a unit

4.a) b) c) d) Distinguish between a unit cell and a crystal. Prove that for a FCC lattice structure Prove that for BCC unit cell, volume (Vecc), Hence or otherwise find the APF for BCC b) 5.a) State Bragg's law. Find the index of a plane that intercepts the three axes at a unit cell distance (121) c) If for a certain BCC crystal, the (110) plane has a separation of 1.181A and wavelength of X-ray is 1.540A. Find the glance angle for the 1st line of reflection. Hence find the atomic radius

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