{"term":{"id":"07001","title":"binding energy","longtitle":"IUPAC Gold Book - binding energy","doi":"10.1351\/goldbook.BT07001","code":"BT07001","status":"current","definitions":[{"id":1,"text":"The difference between the total energy of a molecular system and the sum of the energies of its isolated $\\ce{\\uppi\\!\\mbox{-}}$ and $\\ce{\\upsigma\\!\\mbox{-}bonds}$. The value of binding energy depends upon the geometrical arrangement of the isolated subunits (molecules). According to another definition, the term to be subtracted from the total energy is the sum of the energies of the separate atoms in the corresponding valence states, which compose the molecule.","links":[{"term":"valence","url":"https:\/\/goldbook.iupac.org\/terms\/view\/V06588"}],"sources":["PAC, 1999, 71, 1919. 'Glossary of terms used in theoretical organic chemistry' on page 1926 (https:\/\/doi.org\/10.1351\/pac199971101919)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/BT07001\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/BT07001\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/BT07001\/plain"},"citation":"Citation: 'binding energy' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351\/goldbook.BT07001","license":"The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/) for individual terms.","collection":"If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org .","disclaimer":"The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.","accessed":"2026-05-10T02:32:34+00:00"}}