An element has a face-centred cubic (fcc) structure with a cell edge of a. The distance between the centres of two nearest tetraheadral voids in the lattice is
a. √2a
b. a
c. 3/2 (a)
d. a/2
Ans. d
Explanation : Nearest distance between tetrahedral voids in a fcc lattice is a/2
(55)
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