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The correct statement (s) for cubic clos...

The correct statement (s) for cubic close packed (ccp) three dimensional structure is (are)

A

The number of the nearest neighbours of an atom present in the topmost layer is 12

B

The efficiency of atom packing is 74%

C

The number of octahedral and tetrahedral voids per atom are 1 and 2, respectively

D

The unit cell edge length is `2sqrt(2)` times the ra- dius of the atom

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The correct Answer is:
B, C, D
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