Q.

An element has a face-centred cubic structure with a cell edge of a. The distance between the centres of two nearest octahedral voids in the lattice is

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a

a

b

a2

c

a2

d

3a2

answer is C.

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Detailed Solution

It is the distance between centre of the cube and edge centre which is equal to half the length of the face diagonal.

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An element has a face-centred cubic structure with a cell edge of a. The distance between the centres of two nearest octahedral voids in the lattice is