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electron pair

noun
  1. Chemistry. two electrons occupying the same orbital in an atom or molecule; two electrons working together, especially forming a nonpolar covalent bond between atoms.
  2. Physics. an electron and a positron produced in a reaction, as by a high-energy photon.
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Also called du·plet [doo-plit] /ˈdu plɪt/.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for duplet

duplet

noun
  1. a pair of electrons shared between two atoms in a covalent bond
  2. music a group of two notes played in the time of three
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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

duplet in Science

electron pair

  1. Two electrons functioning or regarded as functioning together, especially two electrons that form a covalent bond between atoms.
  2. An electron and a positron produced by a high-energy photon.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.