electron pair

Chemistry. two electrons occupying the same orbital in an atom or molecule; two electrons working together, especially forming a nonpolar covalent bond between atoms.
Physics. an electron and a positron produced in a reaction, as by a high-energy photon.
Also called duplet.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Science Dictionary
electron pair  
  1. Two electrons functioning or regarded as functioning together, especially two electrons that form a nonpolar covalent bond between atoms.

  2. An electron and a positron produced by a high-energy photon.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
So the electron pair zips around the material unimpeded, giving rise to superconductivity.
Because the electron pair is different from a hydrogen atom, the resulting shape is not a perfect tetrahedron as in methane.
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