Identify the correct location(s) and fractional contribution(s) to determine the total effective num — Solid State Chemistry Question

💡 Solution & Explanation

In an FCC lattice, octahedral voids are located at the body center (contribution $1$) and at the center of all 12 edges (contribution $\frac{1}{4}$ each). Total OVs = $1 + (12 \times \frac{1}{4}) = 4$. Tetrahedral voids are located in the small octants (body diagonals).