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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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  • Variable Valency Covalency in Chemistry - Study. com
    Variable Valency Covalency in Chemistry Instructor Justin Wiens Justin teaches college chemistry and has Bachelor and Doctorate degrees in chemistry
  • What is the valency of oxygen? - Homework. Study. com
    The electrons are involved in forming chemical bonds The valency of an atom refers to the number of electrons the atom needs to share, gain, or donate in order to be stable Answer and Explanation: 1 The valency of oxygen is -2 This means oxygen needs to gain or share two electrons for stability Remember, electrons are negative, which is why
  • What is the valency of phosphorus? - Homework. Study. com
    Valency: The electrons that an atom contains in its outermost shell are called valence electrons These electrons can form chemical bonds The number of valence electrons gained or lost in this process is known as the valency of the element Answer and Explanation: 1 The valency of phosphorus can be three or five
  • What is the valency of chromium? - Homework. Study. com
    Answer to: What is the valency of chromium? By signing up, you #039;ll get thousands of step-by-step solutions to your homework questions You can also
  • What is the number of valence electrons in cadmium (Cd)?
    Cadmium is a naturally occurring chemical element It is used in a variety of applications including corrosion-resistant coatings, paint pigments, and rechargeable batteries Although cadmium has been widely used in industrial applications for over 150 years, only recently was the toxicity of this element realized
  • Werners Theory of Coordination Compounds - Study. com
    The secondary valency corresponds to the coordination number and is not ionizable The coordination number is the total number of ligands that can directly bind to the complex's central metal atom
  • What is the valency of hydrogen? - Homework. Study. com
    Valency: Remember that atoms are made of electrons, protons, and neutrons Protons and neutrons make up the nucleus Electrons are outside the nucleus and responsible for bonding Valency describes the number of electrons an atom needs to share, gain, or lose to form a bond Answer and Explanation: 1 The valency of hydrogen can either be +1 or -1
  • What is the valency of potassium? - Homework. Study. com
    The valency of some individual elements can be determined from their location on the periodic table where it corresponds to the number of the column in which they are found For molecules or compounds, a formula must be used to derive the valency of the individual components
  • What is the valency of peroxide? - Homework. Study. com
    The valency of peroxide is 2 Valency for polyatomic ions is the absolute value of the charge on the ion The valencies of ions can be thought of as
  • How to find valency of radicals - Homework. Study. com
    Valency Valency is the number of the valence electrons that participate in a chemical reaction assigned to atoms, ions, or any other species Since the number of such electrons can vary depending on the reaction, valency is given in the context of a reaction, rather than being an intrinsic property of a species Answer and Explanation:





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