# Right option for the number of tetrahedral and octahedral voids in hexagonal primitive unit cell are :

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Right option for the number of tetrahedral and octahedral voids in hexagonal primitive unit cell are :

(1) 12, 6

(2) 8, 4

(3) 6, 12

(4) 2, 1

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Ans: (1) 12, 6

Explanation: No of unit cell in HCP = octahedral void.

Tetrahedral void = 2×octahedral void.