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valence electron

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noun Chemistry.
  1. an electron of an atom, located in the outermost shell (valence shell) of the atom, that can be transferred to or shared with another atom.
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Origin of valence electron

First recorded in 1925–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

valence electrons in Science

valence electron

  1. An electron in one of the outer shells of an atom that can participate in forming chemical bonds with other atoms.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

valence electrons in Culture

valence electrons

In chemistry, those electrons found in orbits farthest from the nucleus of the atom. These electrons determine the way in which the atom will combine with other atoms, and thus determine its chemical properties.

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The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.