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.

Origin of valence electron

First recorded in 1925–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Science definitions for valence electrons

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.

Culture definitions for valence electrons

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.

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.