In a closed packed lattice, the number of octahedral sites as compared to tetrahedral ones will be:

equal

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half

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double

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triple

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Solution

The correct option is B half
In a closed packed lattice, the number of octahedral sites as compared to tetrahedral ones will be half.

For example, a ccp lattice contains $4$ atoms per unit cell. It has $4$ octahedral voids and $8$ tetrahedral voids.

Hence, the correct option is $B$

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How will you distinguish between the following pair of terms :

(i) hexagonal close-packing and cubic close-packing?

(ii) crystal lattice and unit cell ?

(iii) tetrahedral void and octahedral void?

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