Flame Institute SCF 18 Near Chawla Lights Phase 7 Mohali Chandigarh 9888949978
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  • Flame SCF 18 Near Chawla Lights Ph-7 Mohali 9888949978

If ‘Z’ is the number of atoms in the unit cell that represents the closest packing sequence — A B C A B C —, the number of tetrahedral voids in the unit cell is equal to

a.  Z

b. 2 Z

c. Z/2

d. Z/4

Ans. b

Explanation : Number of tetrahedral voids in the unit cell

= 2 x number of atoms = 2 Z

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