So let's think about methane using valence bond theory.
让我们用价电子成键理论来看一看甲烷。
So the idea behind valence bond theory is very easy to understand.
价电子成键理论，非常容易理解。
So, we can think about now how do we describe this bond in valence bond theory.
我们现在可以考虑，怎么在价电子成键理论中描述这个键。
Valence-bond theory was formed on the basis of the classical ideas of valence bond.
价键(VB)理论在经典的共价键理论基础上产生。
In the preceding section we discussed the valence bond ( vb) or electron-pair theory of bonding.
在前面一节，我讨论了价键法&电子配对理论。
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。
And to do this we're going to introduce valence bond theory, and the idea of hybridization of orbitals.
在这之前我们要引入价电子成键理论，和杂化轨道的概念。
Based on the valence bond theory, a general molecular formula for organic com - pounds is derived.
本文根据价键理论导出了一个有机化合物的分子总通式。
All right, so that's really all there is to thinking about valence bond theory in terms of the most simple explanation here.
好了，这就是，价电子轨道理论的，最简单的解释。
Changes of the nonlinear polarizability of the molecular layers can be explained by using the theory of atom-radical and valence bond.
膜层的非线性极化率的改变可用原子基团和价键理论解释。
In valence bond theory, the focus is on discussing the bonds, but it should look very familiar to you, because there's two types of bonds that we want to discuss here.
在价电子成键理论中，所关注的是讨论成键，但这对于你们来说应该很熟悉，因为这是我们要讨论的两种键。
So, using our simple valence bond theory, what we would expect is that we want to pair up any unpaired electrons in methane with unpaired electrons from hydrogen and form bonds.
利用简单的价电子成键理论，我们预计，要把所有甲烷中没有配对的电子，和氢原子中没有配对的电子配对来形成键。
So what I want to tell you is we also always get the same bond order if we instead only deal with the valence electrons.
我想要说的是我们如果，只考虑价电子也可以得到相同的键序。
OK, then it says draw a single bond from each surrounding atom to the central atom, and subtract two valence electrons.
后将中心原子与其相邻原子之间，连上单键，然后减掉2个价电子。
Electrovalence: valence characterized by the transfer of electrons from atoms of one element to atoms of another during the formation of an ionic bond between the atoms.
电价：在原子间形成离子键的过程中，由电子从一种元素的原子转移到另一种元素的原子所表示的价。
This paper analyzes shell electron pair repulsion theory , valence-bond theory and molecular orbital theory on molecular structure of noble gas compounds.
对稀有气体化合物的分子结构分别用“价层电子对互斥理论”、“价键理论”和“分子轨道理论”进行了分析处理。
Effective valences of copper in superconducting oxides were calculated from the concept of bond valence.
从键价的概念出发，对氧化物超导体中铜离子的有效电荷进行了计算。
The bent bond states mainly appear near the top of valence band.
弯键态主要出现在价带顶附近。
So let's just prove that to ourselves and figure out the bond order just using valence electrons.
让我们证明一下这一点，来看看只用价电子算出键序。
The valence electron structures and covalent bond energy have been calculated for cobalt high speed steel.
计算了含钴高速钢的价电子结构与共价键能。
The valence electron structures and covalent bond energy have been calculated for cobalt high speed steel.
计算了含钴高速钢的价电子结构与共价键能。
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