Summary of Periodic Trends

Atomic Radius of Atoms

Why Atomic Radii Increases Down a Group

Why Atonic Radii Decreases Across a Period of Increasing Z

Chemical Properties within a Group

Ionization Energy (IE)

Successive Ionization Energies (IE)

Electron Affinity (EA)

Electronegativity

Atomic Radius of Ions

The Explanation of Cation and Anion Size

Isoelectric Ions

Photoelectron Spectroscopy (PES)