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electron affinity

noun, Physics, Chemistry
the quantitative measure, usually given in electron-volts, of the tendency of an atom or molecule to capture an electron and to form a negative ion. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for electron affinity
  • Surfaces in different conditions have varying electron affinity, sure enough.
  • The electron affinity search looks for a species with a given electron affinity.
  • It involves averaging the magnitudes of the atomic ionization energy and the atomic electron affinity.
  • Likewise electron affinity is a also a positive number.
British Dictionary definitions for electron affinity

electron affinity

a measure of the ability of an atom or molecule to form a negative ion, expressed as the energy released when an electron is attached A
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Contemporary definitions for electron affinity

the amount of energy needed to remove an electron from a negatively charged ion; also, the energy released when a single electron is combined with an isolated atom's 21st Century Lexicon
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