valency 显示所有例句 n. 1. 价;化合价;原子价a measurement of the power of an atom to combine with others, by the number of hydrogen atoms it can combine with or displace 2. 组配数限,配价(一个词,尤指动词,在句子中结合的语法成分的数目)the number of grammatical elements that a word, esp...
Electrons which are present in the outermost shell of an atom are known as “valence electrons” and the number of valence electrons is known as the
组配数限，配价（一个词，尤指动词，在句子中结合的语法成分的数目）the number of grammatical elements that a word, especially a verb, combines with in a sentence
Table of Element Valences Number Element Valence 1 Hydrogen (-1), +1 2 Helium 0 3 Lithium +1 4 Beryllium +2 5 Boron -3, +3 6 Carbon (+2), +4 7 Nitrogen -3, -2, -1, (+1), +2, +3, +4, +5 8 Oxygen -2 9 Fluorine -1, (+1) 10 Neon 0 11 Sodium +1 12 Magn...
Valency is the combining capacity of the elements to form compounds. During the formation of the molecules of the compounds, atoms combine in certain fixed proportions. Visit BYJUS to learn more about it.
The number of atoms of other elements with which one atom of an element combines is decided by the valency of that element. Valency is simply equal to the number of electrons gained, lost or shared by an atom of an element to achieve the nearest noble gas configuration. For example, the...
Try it for free as part of the Oxford Advanced Learner’s Dictionary app. (linguistics) the number of grammatical elements that a word, especially a verb, combines with in a sentence Word OriginSee valency in the Oxford Advanced American Dictionary Check pronunciation: valency...
The number of electrons lost or acquired by an element's atom during the creation of ionic bonds is its electrovalency. Variable valency is not displayed in the s-block elements. P-block elements with higher atomic numbers and inner transition elements, on the other hand, have variable valency...
Carbon has avalencyof 4. 碳的化合价是4价。 牛津词典 Except for the transitional elements,valencyelectrons are in the outermost electron shell. 除去过渡元素外, 价电子位于最外面的电子层. 辞典例句 The antibiotic activity andvalencyconnect with transfer efficiency and dissociation constant. ...
Atomicity refers to the number of atoms in a molecule, like O₂ having an atomicity of two. Valency is the combining capacity of an element, indicating how many bonds an atom can form with others, like oxygen having a valency of two. ...