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In hexagonal close packing, the differen...

In hexagonal close packing, the difference, in the number of respecitvely, and octahedral voids per unit cell is

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The correct Answer is:
6
In one hcp unit cell, there are 6 atoms.
No. of octahedral voids = 6
No. of tetrahedral voids = 12
Difference = `12 - 6 = 6`.
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