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The zincblende structure of ZnS has the relatively large sulfide ion arranged at the lattice points of a face-centered cubic structure. The edge length of cubic unit cell is 540.9 pm. Determine the density of zincblende.

a) 3.081 g/cm3
b) 1.023 g/cm3
c) 4.091 g/cm3
d) 2.046 g/cm3
e) 2.032 g/cm3

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