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Which of the following is/are ture about...

Which of the following is/are ture about HCP and CCP lattice?

A

Number of tetrahedral voids are twice of octahedral holes

B

12 tetrahedral and 6 octahedral voids are present in one HCP unit cell

C

C.N. of HCP unit cell is 12

D

If atom of tetrahedral voids displace into octahedral voids, then is Schottky defect.

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