valence electron


noun Chemistry.

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. 2020

Scientific definitions for valence electron

valence electron

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