The General Periodic Trends

Here are the general periodic trends of the the five periodic properties:


Ionization Energy increases up and to the right

Electron Affinity increases up and to the right

Electronegativity increases up and to the right

Atomic Radius increases down and to the left

Ionic Radius increases down. Going across, it intially decreases, then increases dramatically, then decreases again.

Much more interesting is why these trends are what they are.