valence中文什么意思

n.
【化学】(化合)价；(原子)价；【生物学】效价。n.
＝ valance.

• valence valence:    离子价
• absolute valence:    绝对价, 最高价
• active valence:    有效化合价

例句与用法

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1. In the preceding section we discussed the valence bond(vb)or electron-pair theory of bonding .
   在前面一节，我们讨论了价键法电子配对理论。
2. A simple and useful characterization of the outer electrons in an atom is the idea of valence .
   对原子外层电子的简单而有用的描述是原子价的概念。
3. Halogen atoms contain seven electrons in their valence shell, and, consequently, are monovalent .
   卤原子在它们的价电子层含有七个电子，因此是一价的。
4. It was generally believed that in a metal the valence electrons are easily detached from the individual atoms .
   一般认为，在金属中价电子容易脱离个别原子。
5. One way to simplify the problem is to divide the electrons into two groups: the 36 core electrons, and the two 4s valence electrons .
   简化此问题的一个方法是把电子分成两组：36个原子实电子和2个4s价电子。

英文释义

名词

1. (chemistry) a property of atoms or radicals; their combining power given in terms of the number of hydrogen atoms (or the equivalent)
   同义词：valency
2. (biology) a relative capacity to unite or react or interact as with antigens or a biological substrate
   同义词：valency