In chemistry, the valence (US spelling) or valency (British spelling) of an atom is a measure of its combining capacity with other atoms when it forms chemical compounds or molecules. Valence is generally understood to be the number of chemical bonds that each atom of a given chemical element typically forms.

The meaning of VALENCE is the degree of combining power of an element as shown by the number of atomic weights of a monovalent element (such as hydrogen) with which the atomic weight of the element will combine or for which it can be substituted or with which it …

2018年9月30日 · Valence describes how easily an atom or radical can combine with other chemical species. This is determined based on the number of electrons that would be added, lost, or shared if it reacts with other atoms.

2021年3月3日 · In chemistry and physics, a valence electron is an electron associated with an atom that can form a chemical bond and participate in a chemical reactions. Valence electrons are outer shell electrons for main group elements.

valence, in chemistry, the property of an element that determines the number of other atoms with which an atom of the element can combine. 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 combining capacity of an atom is known as its valency. The number of bonds that an atom can form as part of a compound is expressed by the valency of the element. We all know how electrons in an atom are arranged in shells/orbitals. Valence electrons are those electrons which are present in the outermost orbit of the atom.

2019年1月24日 · The IUPAC formal definition of valence is the maximum number of univalent atoms that may combine with an atom. Usually, the definition is based on the maximum number of either hydrogen atom or chlorine atoms.

2023年2月2日 · Atoms with valence shells filled with electrons (octet or duplet) are chemically inert. They absorb or release energy as small packets of energy (photons). They categorize elements into metal, non-metal, or metalloid based on the electrical conductivity of an element.

2017年7月26日 · The main difference between valence and valency is that valence refers to the ability of an atom to be combined with another atom whereas valency refers to the maximum number of electrons that an atom can lose or gain in order to stabilize itself.

Valence electrons are electrons that located in the outermost electron shell of an atom. These electrons, being the furthest from the nucleus and thus the least tightly held by the atom, are the electrons that participate in bonds and reactions.