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- Valence electron
Outer shell electron that is associated with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed
In chemistry and physics, valence electrons are electrons in the outermost shell of an atom, and that can participate in the formation of a chemical bond if the outermost shell is not closed. In a single covalent bond, a shared pair forms with both atoms in the bond each contributing one valence electron. The presence of valence electrons can determine the element's chemical properties, such as it... Wikipedia
