The amount of energy needed in order to take an electron away from an atom.<ref>Wile, Dr. Jay L. ''Exploring Creation With Chemistry''. Apologia Educational Ministries, Inc. 1998</ref>
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'''Ionization potential''' is the amount of energy needed in order to take an [[electron]] away from an [[atom]].<ref>Wile, Dr. Jay L. ''Exploring Creation With Chemistry''. Apologia Educational Ministries, Inc. 1998</ref>