Definitions for Valence Band
va·lence band

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1. valence bandnoun

   The highest range of electron energies in an insulator or semiconductor that can be populated; it corresponds to the valence electrons of the constituent atoms

WikipediaRate this definition:0.0 / 0 votes

1. valence band

   In solid-state physics, the valence band and conduction band are the bands closest to the Fermi level, and thus determine the electrical conductivity of the solid. In nonmetals, the valence band is the highest range of electron energies in which electrons are normally present at absolute zero temperature, while the conduction band is the lowest range of vacant electronic states. On a graph of the electronic band structure of a material, the valence band is located below the Fermi level, while the conduction band is located above it. The distinction between the valence and conduction bands is meaningless in metals, because conduction occurs in one or more partially filled bands that take on the properties of both the valence and conduction bands.

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1. Valence band

   In solids, the valence band is the highest range of electron energies in which electrons are normally present at absolute zero temperature. The valence electrons are bound to individual atoms, as opposed to conduction electrons, which can move freely within the atomic lattice of the material. On a graph of the electronic band structure of a material, the valence band is located below the conduction band, separated from it in insulators and semiconductors by a band gap. In metals, the conduction band has no energy gap separating it from the valence band. To understand the concept of a valence band, it is important to consider the atomic structure of a metal first. For example lithium atoms with electronic configuration 1s²2s¹ can form only one covalent bond. However, when forming a bulk metal, Li atoms come to a resonance structure by taking 1 electron from its neighbouring Li atom and the resultant electronic configuration becomes 1s²2s¹2p¹. As a result of this electron sharing, its neighbouring Li atom loses an electron and comes to an electronic configuration of 1s². The Li atoms now gain the capability to form two covalent bonds thus can form a bulk metal. Inside the metal Li remain alone but nullify the negative charges of the neighbouring Li atoms thus forming a lithium metal matrix.

How to pronounce Valence Band?

1. Alex

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   David

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   Mark

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   Daniel

   British

   Libby

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   Mia

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   Australian

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How to say Valence Band in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of Valence Band in Chaldean Numerology is: 4

2. Pythagorean Numerology

   The numerical value of Valence Band in Pythagorean Numerology is: 2

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Valence_Band
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Valence_Band
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=Valence Band