(Solved): 1. Draw a cross section of an FCC cell cut diagonally in half. Find the planar packing fraction of ...

1. Draw a cross section of an FCC cell cut diagonally in half. Find the planar packing fraction of this section. Also find the linear packing fraction of the body diagonal (which lies in this section). 2. Calculate the atomic packing fraction of an FCC cell. 3. Draw a cross section of an SC cell cut diagonally in half and add an interstitial atom at the \( (1 / 2,1 / 2,1 / 2) \) site. Assuming the lattice is not deformed, calculate the radius of this interstitial atom relative to the radius of the primary atom.