Question

For the structure given below the site marked as $S$ is a:

• A. tetrahedral void
• B. cubic void
• C. octahedral void
• D. none of these

Answer 1

Answer: (C)

octahedral void

In an FCC cell, octahedral voids are present at body centre of the cube and on the centre of each of the 12 edges of the cube.

So, the site $S$ is an octahedral void.

Hence, the correct answer is option $\text{C}$.