The number of tetrahedral voids per unit

Question:

The number of tetrahedral voids per unit cell in NaCl crystal is ________.

(i) 4

(ii) 8

(iii) twice the number of octahedral voids.

(iv) four times the number of octahedral voids.

Solution:

Option (ii) 8 and (iii) twice the number of octahedral voids are the answers.

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