Valence electron what is it

Need even more definitions? Just between us: it's complicated. Ask the Editors 'Everyday' vs. What Is 'Semantic Bleaching'? How 'literally' can mean "figuratively". Literally How to use a word that literally drives some pe Is Singular 'They' a Better Choice? The awkward case of 'his or her'.

Take the quiz. Our Favorite New Words How many do you know? Spell It Can you spell these 10 commonly misspelled words? A valence electron is an electron that is associated with an atom, and that can participate in the formation of a chemical bond; in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a shared pair.

The presence of valence electrons can determine the element's chemical properties and whether it may bond with other elements: For a main group element, a valence electron can only be in the outermost electron shell. An atom with one or two valence electrons more than a closed shell is highly reactive, because the extra valence electrons are easily removed to form a positive ion. An atom with one or two valence electrons fewer than a closed shell is also highly reactive, because of a tendency either to gain the missing valence electrons thereby forming a negative ion , or to share valence electrons thereby forming a covalent bond.

Like an electron in an inner shell, a valence electron has the ability to absorb or release energy in the form of a photon. An energy gain can trigger an electron to move jump to an outer shell; this is known as atomic excitation.

Or the electron can even break free from its associated atom's valence shell; this is ionization to form a positive ion. When an electron loses energy thereby causing a photon to be emitted , then it can move to an inner shell which is not fully occupied. Top Corrosion Mitigation Technologies to Watch for in Soluble Salts and Coating Performance. Introduction to Electroplating Interview with Jane Debbrecht. Metallizing How to Control Corrosion by Improving Design.

Why is Stainless Steel Corrosion Resistant? An Introduction to Hydrogen Embrittlement. An Intro to Pipeline Corrosion in Seawater. Follow Connect with us. Sign up. Thank you for subscribing to our newsletter! Connect with us. Valence Electron. What Does Valence Electron Mean?

Corrosionpedia Explains Valence Electron Valence electrons are the electrons in the outermost electron shell of an atom.

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