CH322 - Cubic Unit Cell

Cubic Cell

Tetragonal Cell

Orthorhombic Cell

Rhombohedral Trigonal Cell

Hexagonal Cell

Monoclinic Cell

Triclinic Cell

Primitive Cell

Side Centered Cell

Face Centered Cell

Body Centered Cell

Polonium metal crystallise with a primitive cubic unit cell. Give the relative lengths of the cell edges and the angles between them.

Cubic unit cell

Determine the total number of atoms in each primitive cubic unit cell.

1/8 × 8 = 1 = total atoms

Explain why the primitive cubic crystal structure rarely occurs.

The primitive cubic structure rarely occurs because of its low packing efficiency and stability due to a low number of nearest neighbours and a large amount of empty space.