JEE Main & Advanced
Chemistry
The Solid State / ठोस प्रावस्था
Question Bank
Crystal packing
question_answer
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 [AIIMS 2005]
A)Z
B)2 Z
C)Z/2
D)Z/4
Correct Answer:
B
Solution :
Number of tetrahedral voids in the unit cell
= 2 ´ number of atoms = 2Z.