Published by:
CGP EDU Academic Team
Published on: August 13, 2026
A crystal is made up of metal ions ' 
' ana ' 
' and oxide ions. Oxide ions form a ccp lattice structure. The cation ' 
' occupies 
of octahedral voids and the cation ' 
' occupies 
of tetrahedral voids of oxide lattice. The oxidation numbers of ' 
' and ' 
' are, respectively:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
ions form ccp. 
of O.V. 
of T.V. 
So formula is : 
This must be neutral. Both metals must have +8 charge in total.
From given options: 
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