ion radical ion radical ion J. Laskin, J. H. Futrell. Mass Spectrom. Rev. 24, 135 (2005). IUPAC. Compendium of Chemical Terminology, 2nd ed. (the Gold Book). Compiled by A. D. McNaught and A.Wilkinson. Blackwell Scientific Publications, Oxford (1997). A radical ion is a radical that carries an electric charge. [IUPAC] K. K. Murray, R. K. Boyd, M. N. Eberlin, G. J. Langley, L. Li and Y. Naito, Pure Appl. Chem., 2013, 85, 1515-1609 IUPAC. Analytical Division. Compendium of Analytical Nomenclature (the Orange Book). Definitive Rules, 1979. Compiled by J. Inczédy, T. Lengyel, A. M. Ure. Blackwell Scientific Publications, Oxford (1997) G. L. Glish, D. J. Burinsky. J. Am. Soc. Mass Spectrom. 19, 161 (2008). radical atomic scale