Valence electron

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Fower covalent bonds. Carbon haes fower valence electrons an here a valence o fower. Each hydrogen atom haes ane valence electron an is univalent.

In chemistry, a valence electron is an electron that is associatit wi an atom, an that can pairteecipate in the formation o a chemical bond; in a single covalent bond, baith atoms in the bond contreibute ane valence electron in order tae form a shared pair. The presence o valence electrons can determine the element's chemical properties an whether it mey bond wi ither elements: For a main group element, a valence electron can exeest anly in the ootermaist electron shell. In a transeetion metal, a valence electron can an aa be in an inner shell.