Periodic Properties of the Elements

Note, electron affinity is not the same as electronegativity!

Terms

Isoelectronic

Atoms with the same number of electrons.

Ionization energy

Predict Metallic Character Based on Periodic Trends

Expanded Octet （Exceptions to the Octet Rule）

All non-metals from period 3 to period 8 of the Periodic Table, can have expanded octets.