Question: 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

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 2?2 times the radius of the atom

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