In the structure given below, the sites `S_(1) and S_(2)` represent

Options

A. Both octahedral voids
B. Both tetrahedral voids
C. `S_(1)-`octahedral void, `S_(2)` tetrahedral void
D. `S_(1)-`tetrahedral void,` S_(2)-`octahedral void

Answer

C

Explanation

In the foc arrangement occtahedral voids are present on the edge centres and tetrahedral voids are present on the body diagonals. Hence, `S_(1)` is octahedral void and `S_(2)` is tetrahedral void.