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valency    
n. 原子价

原子价

valency
n 1: the phenomenon of forming chemical bonds
2: (biology) a relative capacity to unite or react or interact
as with antigens or a biological substrate [synonym: {valence},
{valency}]
3: (chemistry) a property of atoms or radicals; their combining
power given in terms of the number of hydrogen atoms (or the
equivalent) [synonym: {valence}, {valency}]

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  • Valence (chemistry) - Wikipedia
    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
  • Define Valency - BYJUS
    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
  • What Is Valence or Valency in Chemistry? - ThoughtCo
    Valence, or Valency, describes how easily an atom or radical can combine with other chemical species
  • What Is Valency and How Does It Determine Bonding?
    Valency describes an atom’s combining power, indicating how many chemical bonds it forms with other atoms This capacity is determined by the number of electrons in an atom’s outermost shell, known as valence electrons
  • Atomic structure, Electron configuration Bonding - Britannica
    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 A brief treatment of valence follows For full treatment, see chemical bonding: Valence bond theory
  • Valency Definition Types and Examples in Chemistry - Vedantu
    Learn valency definition types formula and examples for atoms and ions Understand how to find valency for exams and chemical bonding basics
  • What Is Valence or Valency in Chemistry - A Plus Topper
    There are certain elements that exhibit more than one valencies in their ions (or compounds) Example: Iron can exist as Fe 2+ or Fe 3+ in its compounds In such cases the name of the ion with lower valency ends with a suffix ‘ous’ while that with higher valency ends with a suffix ‘ic’
  • What is Valency With Examples How Do We Calculate
    Valency, in chemistry, refers to the combining capacity of an element or an ion It indicates the number of chemical bonds an atom of that element can form to attain a stable configuration
  • What is Valency? - freechemistryonline. com
    What is Valency? The valency of an element is the number of hydrogen atoms that can combine with or replace (either directly or indirectly) one atom of the element
  • Valency | Journal of Chemical Education - ACS Publications
    Three types of valency are distinguished : primary or classical, coordinate, and nonclassical The first relates to simple compounds and to the components of multiple ones, the second to coordination compounds, and the third to transition-metal carbonyls and similar species





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