Question: Calculate the planar atomic density in atoms per square millimeter for the (0001) plane in HCP beryllium which has a constant a = 0.22856

Calculate the planar atomic density in atoms per square millimeter for the

Calculate the planar atomic density in atoms per square millimeter for the (0001) plane in HCP beryllium which has a constant a = 0.22856 nm and a c constant of 0.35832 nm. The area intersected by the (0 00 1) plane and the HCP unit cell is simply the basal area, shown in the sketch to the right:

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