QJEEM19Ch0e47: JEE Main 2019 Chemistry - Class 12 JEEM19Ch0e47 Solution: An element has a face-centred cubic (fcc) structure with a cell …

Question

Verified Solution • 2025–26 Session moderate

An element has a face-centred cubic (fcc) structure with a cell edge of

a

. The distance between the centres of two nearest tetrahedral voids in the lattice is :

Accepted Answer

In FCC, tetrahedral voids are located on the body diagonal at a

distance of

{{\sqrt 3 a} \over 4}

from the corner. Together they form a smaller cube of edge length

{a \over 2}

.

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