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Magnesium has the HCP crystal structure. Given the data from the previous problem and the fact...

Magnesium has the HCP crystal structure. Given the data from the previous problem and the fact that we can take the lattice constant in the c-direction to be 0.497, what is the planar packing factor for the (10 -1 0) (... forgive the formating as I cannot do an overbar here) plane?

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