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valency

n. 原子价

原子价

WordNet (r) 3.0 (2006) (WordNet)

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}]

The Collaborative International Dictionary of English v.0.48 (gcide)

Valency \Val"en*cy\, n.; pl. {Valencies}. (Chem.)
(a) See {Valence}.
(b) A unit of combining power; a so-called bond of affinity.
[1913 Webster]

The Free On-line Dictionary of Computing (foldoc)

{degree}

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英文字典中文字典相关资料:

Sodium Aluminate Valency, Solubility Uses | Study. com
Valency of Aluminate Since aluminate is a compound with covalent bonds, it gets a little more complicated to understand the valency of aluminate Aluminum can form 3 bonds
What is the valency of magnesium? | Homework. Study. com
The valency of magnesium is 2 Magnesium has an atomic number of 12, and it belongs to the second group in the periodic table
Variable Valency Covalency in Chemistry - Study. com
Variable Valency Covalency in Chemistry Instructor Justin Wiens Show bio Justin teaches college chemistry and has Bachelor and Doctorate degrees in chemistry Cite this lesson
What is the valency of oxygen? | Homework. Study. com
Valency: Atoms are made of protons, neutrons, and electrons Protons and neutrons make up the nucleus, and electrons are found outside the nucleus 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
What is the number of valence electrons in cadmium (Cd)?
The element, cadmium (Cd) has two valence electrons These are electrons located in its atom's outer shell Per the octet rule, elements naturall
What is the valency of potassium? | Homework. Study. com
First, the valency of each element must be determined using the periodic table, this number is then multiplied by the number of atoms of each element within the compound For example in PO4 the valence number of oxygen (2) would be multiplied by 4 to give 8; the valency of phosphorus would simply be 5
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
What is the valency of phosphorus? | Homework. Study. com
The valency of phosphorus can be three or five Phosphorous belongs to group 15 of the periodic table All members of group 15 have five valence
What is the valency of fluorine and how to find it?
Valency is another term referring to the number of valence electrons orbiting the nucleus of an atom Valence electrons are those found in the outer electron shell These are the electrons responsible for an element's reactions with other elements
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

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