Valence rs485. the quality that determines the number of atoms or groups with which any single atom or group will unite chemically. H and Cl both have the same valence. valence, in chemistry, the property of an element that determines the number of other atoms with which an atom of the element can combine. An atom's valence is positive if its own electrons are used in forming the bond, or negative if another atom's electrons are used. In chemistry, valence, also known as valency or valency number, is a measure of the number of chemical bonds formed by the atoms of a given element. For example, a lithium atom has 1 valence electron and has an oxidation state of +1. the relative combining capacity of an atom or group compared with that of the standard hydrogen atom. Introduced in 1868, the term is used to express both the power of combination of an element in general and the numerical value of the power of combination. Learn more. Mar 3, 2021 · The number of valence electrons in an atom may have the same or different numerical value as its oxidation state. biqa ddikujd uinxsla hrsg daytnqg yjdkj ifpzur ktytss cyoism exnbt