| − | A measure of how strongly an atom attracts extra electrons to itself.<ref>Wile, Dr. Jay L. ''Exploring Creation With Chemistry''. Apologia Educational Ministries, Inc. 1998</ref> | + | A measure of how strongly an [[atom]] attracts extra [[electron]]s to itself.<ref>Wile, Dr. Jay L. ''Exploring Creation With Chemistry''. Apologia Educational Ministries, Inc. 1998</ref> |