5.1. Crystalline, amorphous materials
5.1.1. Unit cell
5.1.2. Atomic Packing Factor (APF)
5.1.3. Packing
5.2. Metallic crystals
5.2.1. Face Centered Cubic (FCC)
5.2.2. Body Centered Cubic (BCC)
5.2.3. Hexagonal close-packed (HCP)
5.3. Ionic solids
5.3.1. Ionic radius
5.3.2. Packing
5.3.3. Crystals of type AX
5.3.4. Crystals of type ΑmΧp
5.3.5. Crystals of type ΑmBnΧp
5.4. Covalent solids
5.4.1. Polymorphism - allotropes
5.5. Crystal Lattice
5.5.1. Crystal systems
5.5.1.1. Cubic, hexagonal, square, rhombohedral, orthorhombic, monoclinic, triclinic
5.5.2. Crystallographic directions
5.5.3. Crystallographic planes
5.6. Structural analysis techniques
5.6.1. X-ray Diffraction (XRD)
