1.4: Periodic Properties of the Elements
Learning objectives for this unit are to:
- Define the following atomic properties: ionization energy, electron affinity, electronegativity, atomic size
- Recall the general trends in atomic properties
- Rationalize or predict periodic trends in atomic radii, ionization energies, and electron affinities using the concepts of effective nuclear charge, electron shielding, electron penetration, and the lanthanide contraction.
- Identify and utilize other periodic trends such as the “diagonal relationship” and the "uniqueness principle"