If the height of HCP unit cell of identical particles is , then the height of tetrahedral voids from — Solid State Chemistry Question

💡 Solution & Explanation

In an HCP unit cell with height $h$, the close-packed layers are at $z = 0$ and $z = h/2$. The tetrahedral voids are situated at heights of $h/8, 3h/8, 5h/8$, and $7h/8$ from the base. Both options A and D correctly list pairs of these valid heights. Therefore, correct answer is A,D.