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A ALAS semiconductor crystal has a lattice constant of a = 0.13 nm, the volume density of As
atoms in this crystal will be:
O 3.641e24 /cm^3
2.048e30 /cm^3
O 1.821e24 /cm^3
O 3.550e16 /cm^3
O 1.593e24 /cm^3

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