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。

youdao

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。

youdao

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。

youdao

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。

麻省理工公开课 - 固态化学导论课程节选

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。

麻省理工公开课 - 化学原理课程节选

So why don't you tell me what the valence bond description would be of these carbon hydrogen bonds?

你们来告诉我,碳氢键的价,电子是怎样的？

麻省理工公开课 - 化学原理课程节选