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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
  • Valency of Elements
    The concept of valency helps explain this in everyday life, especially in making common compounds For example, in table salt (sodium chloride), sodium has a valency of 1, and chlorine also has a valency of 1, so they combine in a simple 1:1 ratio to form a stable compound
  • Valences of the Chemical Elements - ThoughtCo
    Looking for a printable periodic table of the elements with the most common charges of each element? Check out this selection with different types of printable files, including a color version, or a larger wallpaper version Helmenstine, Anne Marie, Ph D "Valency of Elements on the Periodic Table "
  • Valency - Revise: Chemical formulae - National 5 Chemistry Revision . . .
    Valency is the combining power of an element Elements in the same group of the periodic table have the same valency The valency of an element is related to how many electrons are in the outer
  • 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 - GeeksforGeeks
    Valency of an element is a measure of an atom's ability to combine with other atoms to create molecules or chemical compounds The characteristics of an element that indicate how many more atoms can join one of its atoms in a covalent bond are known as valence, or valency, in chemistry
  • Valence electron - Wikipedia
    Each hydrogen atom has one valence electron and is univalent 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





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