ionic+radius

Ionic Radius
When an atom gains or loses electrons to become ionic, the radius of that atom will change.

Any time electrons are __removed__ from an atom or ion, it will get smaller:

When electrons are added to atoms or ions, their radius increases: Here are atomic and ionic radii for the majority of the periodic table: Note that the periodic trend in atomic radius is paralleled by the atoms' ionic radii. It also follows that as more and more electrons are removed, an atom or ion will get sequentially smaller: Take iron for example. The following chart shows its atomic, +2, and +3 oxidation states and corresponding radii: || Fe 2+ || 152 pm || And as more and more electrons are added, an atom or ion will get bigger and bigger.
 * atomic || Fe || 232 pm ||
 * ionic
 * ionic || Fe 3+ || 128 pm ||