Electron affinity
| IUPAC RECOMMENDATIONS 2013 | 
| Electron affinity EEA | 
|---|
| Minimum energy required for a species M to be formed in the process M → M + e where M and M are in their ground rotational, vibrational, and electronic states and the electron has zero translational energy. | 
| Related Term(s): | 
| Reference(s): IUPAC. Analytical Division. Compendium of Analytical Nomenclature (the Orange Book). Definitive Rules, 1979. Compiled by J. Inczdy, T. Lengyel, A. M. Ure. Blackwell Scientific Publications, Oxford (1997). On-line corrected version: http://www.iupac.org /publications/analytical compendium (2000). IUPAC. Compendium of Chemical Terminology, 2nd ed. (the Gold Book). Compiled by A. D. McNaught and A.Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. | 
| From Definitions of Terms Relating to Mass Spectrometry (IUPAC Recommendations 2013); DOI: 10.1351/PAC-REC-06-04-06 © IUPAC 2013. | 
Orange Book
| ORANGE BOOK DEFINITION IUPAC. Analytical Division. Compendium of Analytical Nomenclature (the Orange Book). Definitive Rules, 1979 (see also Orange Book 2023) | 
| Electron affinity | 
|---|
| The electron affinity of a species M is defined as the minimum energy required for the process M- → M + e where M- and M are in their ground rotational, vibrational and electronic states and the electron has zero potential and kinetic energy. | 
| IUPAC 1997 Orange Book Chapter 12 | 
| Index of Orange Book Terms | 
