valence electron


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valence electron

n.
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.

va′lence elec`tron


n.
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.
[1925–30]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.valence electron - an electron in the outer shell of an atom which can combine with other atoms to form molecules
electron, negatron - an elementary particle with negative charge
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References in periodicals archive ?
Second, the localized valence electron at the Ag/Au atoms flattens the [E.sub.F] band, corresponding to the higher effective mass.
Initial quantum phase and density distribution of a valence electron wavepacket.
From this description the formal number of valence electrons can be derived to be used in further calculations of each of the ions.
They have the same number of valence electrons, the same atomic structure and have nearly identical atomic size.
Migdalek and Baylis [9] proposed to introduce a cutoff function directly into the expression for the effective field [E.sub.v] produced by a valence electron at the core, and subsequently obtained the following expressions for [V.sub.p] and [d.sub.eff]:
Total number of valence electrons is denoted by Z, density is denoted by and M denotes the molecular weight of the CaBL single crystal.
The low energy band associated with the diagram emission band involves transitions from valence electrons, some of them originating from oxygen states.
Valence electrons, which are located in outer orbits, participate in chemical bonds.
Since the p-state of Al can accommodate electron more, it competes with H (hydrogen) for the valence electrons of Mg (Mg (12): [1s.sup.2][2s.sup.2][2p.sup.6][3s.sup.2]).
The first transition metal elements (fourth cycles) (Co, Cr, Ti, V, Mn, Fe, Ni, Cu, etc.) present generally in the form of ions in the silicate structure and have a common feature in terms of atomic structure, particularly maximum capacity of 10 electrons in 3d orbit, 1-9 electron transitions, and valence electrons jump between different energy levels (called d-d transition).
The number of valence electrons of the dopant element determines the number of states and its position within the gap when the O atom is replaced.