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An electron in an outer shell of an atom that can participate in forming chemical bonds with other atoms.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
an electron of an atom, located in the outermost shell (va′lence shell`) of the atom, that can be transferred to or shared with another atom.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||valence electron - an electron in the outer shell of an atom which can combine with other atoms to form molecules|
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