valence 是什么意思

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

	(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,
	(biology) a relative capacity to unite or react or interact as with antigens or a biological substrate 同义词：valency,

	1.	The outer ring contains the valence electrons . 排在外层的有价电子。
	2.	A closely related concept is that of free valence . 一个密切有关的概念是自由价。
	3.	The magnetic fields of the valence electrons do not cancel . 价电子的磁性没有抵消。
	4.	All five valences are the ordinary, nonpolar ones . 所有5个价键都是普通的非极性键。
	5.	The valence atom of an alkali-metal atom has two states . 碱金属原子的价原子具有两种能态。
	6.	The secondary valence is directed toward fixed positions in space . 副介指向空间的确定位置。
	7.	Halogen atoms contain seven electrons in their valence shell . 卤原子在它们的介电子层含有七个电子。
	8.	Every element tends to satisfy both its primary and secondary valence . 每一元素倾向于既满足它的主价又要满足它的副价。
	9.	When it is in this condition, the atom is said to be in a valence state . 当它处于这种状态时，这个原子就可说是处于价态。
	10.	In the valence bond treatment, explicit recourse is made to classical, localized bond structure . 价键法明显依赖经典的定域结构。

valence是什么意思