Question

Derive the size of the largest atom that can fit into the void of simple cubic crystal

Answer 1

Ans ➡️HCP is of the ABAB… type and FCC is of ABCABC… type. In HCP and FCC both, the layers are formed of same atoms of the same type in the same arrangement (each sphere surrounded by six) but the placement of the layers on top of each other is different.

Both will have same packing fraction.

his is the highest packing fraction possible because in both types, maximum number of atoms of the same size are present around the atom (namely six).

Hope this helps you ☺️⭐✨✨⭐✌️✌️