| Term | Definition |
|---|
| Ionization energy | _______is the energy required to remove and electron from an atom. |
| Electron affinity | The attraction of an atom for an additional electron is called ________. |
| First ionization energy | The energy needed to remove the most loosely held elecgron in an atom is called the __________. |
| Noble gas configuration | When they have a(n) _______, ions have a stable, filled outer level. |
| Shielding effect | Along with the increased distance of the outer electrons from the nucleus, the _______ of the inner electrons causes ionization energy to decrease going down a column of the periodic table. |
| Atomic radius | The size of an atom is expressed in terms of _________. |
| Ionic radius | The size of an ion is expressed in terms of _______. |
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