Solid xenon forms crystals with a face centered unit cell that has an edge of 620 pm.
1. calculate the atomic radius of xenon.
2. calculate the packing efficiency if xenon.
Solution) 1) For fcc, edge = √8r
Therefore, 620 = 2.82*r
i.e., r = 620/2.82 = 219.86 pm
2) For fcc, packing efficiency = 74%