Pinterest • The world’s catalogue of ideas

Period Table of Balloons demonstrates the periodic trends of atomic and ionic radius. (Blue: Atoms; Green: Cations; White: Anions). Lines made with blue painters' tape. (Nov 2011)

3
from About.com Education

What Is an Ionic Radius? Definition and Trends

What Is an Ionic Radius? Definition and Trends: Ionic radius is half the distance between the nuclei of two ions that are just touching each other.

Atomic radius- Ionization energy: The atomic radius of gold is 1.79Å. The Ionic radius is .85 Å.