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CGP EDU Academic Team
Published on: August 14, 2026
The structure of a crystalline lattice AB is rock salt type where B atoms are occupying all the CCP positions but A atoms are occupying all the octahedral voids -
Text Solution
Verified by ExpertsThe correct answer is:
D
The no. of A atoms remaining = 4 – 1 = 3
The no. of B atoms remaining = 4 – 2 × 
= 4 – 
= 
Molecular formula is A 3 B 15/4 ≡ A 12 B 15 ≡ A 4 B 5
The no. of A atoms
= 4 – 1 – 2 × 
= 4 – 
= 
The no. of B atoms = 4
Molecular formula A 5/2 B 4 or A 5 B 8
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