In closed packed lattice containing $^{'} n^{'}$ particles, the numbers of tetrahedral and octahedral voids are

n, 2 n

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n, n

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2 n, n

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2 n . n / 2

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Solution

The correct option is C $2 n, n$
In closed packed lattice containing ′n′
particles, the numbers of tetrahedral and octahedral voids are 2n and n respectively.
For example, fcc unit cell has 4 atoms per unit cell. It has 8 tetrahedral and 4 octahedral voids respectively.

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Similar questions

How many tetrahedral voids will be formed, if 2n Octahedral voids are formed in the cubic close packing?

n

r

n

0.414 r

2 n

0.225 r

In which of the following structures coordination number for cations and anions in the packed structure will be same ?

(a) $C l^{-}$ ions form fcc lattice and $N a^{+}$ ions occupy all octahedral voids of the unit cell

(b) $C a^{2 +}$ ions form fcc lattice and $F^{-}$ ions occupy all the eight tetrahedral voids of the unit cell

(d) $S^{2 -}$ ions form fcc lattice and $Z n^{2 +}$ ions go into alternate tetrahedral voids of the unit cell

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