Biology Forums - Study Force

I.

The layering in a hexagonal closest-packed structure is aba.

II.

A body-centered cubic unit cell has four atoms per unit cell.

III.

For unit cells having the same edge length, a simple cubic structure would have a smaller density than a body-centered cube.

IV.

Atoms in a solid consisting of only one element would have six nearest neighbors if the crystal structure were a simple cubic array.