And by now I mean the valence electrons .
迄今为止,我指的是 价 电子。
I 'm averaging it over the entire set of valence electrons which gives me1.91 MJ per mole .
我是在整个 价 电子的集合上作平均,最后得到1。91兆焦每摩尔。
The silicon atom occupies the space opening ( interstice ) between the oxygen atoms and shares four valence electrons with the four oxygen atoms .
硅原子占据了氧原子之间的空隙并且和四个氧原子共用 化合价。
So let 's take boron for example and this has-it starts off with three valence electrons .
我们可以看一个例子,我们以 硼为例,这有。
And all he 's done is leave the valence electrons associated .
他所做的全部是,考虑到了 价 电子的关系。
Transition element Any chemical element with valence electrons in two shells instead of only one .
过渡元素及其 化合物: 价 电子处在两个壳层而不是一个壳层里的任何化学元素。
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。
For example we can talk about nitrogen and nitrogen has five valence electrons shown here .
例如,我们可以讨论氮原子,氮原子有5个 价 电子。
Then it says count all the valence electrons .
然后它说,考虑所有的 价 电子。
PROFESSOR : five & there 's five valence electrons but the atomic number is actually seven .
教授:5,有5个 价 电子,但原子序数是7。
For our step two what we need is number of valence electrons .
我们的第二步,需要知道 价 电子的个数。
Our next step is thinking about valence electrons .
我们下一步要考虑的是 价 电子。
So hopefully you remember what we mean by valence electrons versus core electrons .
希望大家还记得, 价 电子与芯电子的定义。
So what if we capture all of the valence electrons .
但是如果我们捕获了所有 价 电子又怎样呢。
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。
So if we talk about hydrogen how many valence electrons are we talking about ? 1 .
如果我们讨论的是氢的话,它应该有多少 价 电子?一个。
The magnetic fields of the valence electrons do not cancel .
价 电子的磁性没有抵消。
How many valence electrons are in chlorine ?
氯有几个 价 电子?
A Study on First-Principles of the Band Structure of Valence Electrons for Single Crystal Al
铝单晶 价 电子能带结构的第一性原理计算研究
We actually need to think about those valence electrons .
我们需要考虑这些 价 电子。
So we have seven valence electrons .
我们有七个 价 电子。
All right so one thing that I first want to point outabout MO theory that is a big difference from Lewis structures is that in MO theory valence electrons are de-localized over the entire molecule .
好了,对于MO理论低一点要指出的,是它和Lewis有着很大的区别,在MO理论里, 价 电子在整个分子里是去局域化的。
Now here is fluorine same skeleton only fluorine has seven valence electrons .
这是氟,同样的结构,只有氟有七个 价 电子。
And remember we 're only talking about valence electrons so the outer-most shells .
要记得,我们讨论的只是 价 电子,也就是最外层的 电子。
Relationship between the number of average valence electrons and the critical current density of the doping MgB_2
平均 价 电子数与掺杂MgB2体系临界电流密度的关系
So we 're talking about four valence electrons for carbon .
那么碳有四个 价 电子。
So what we should have is8 valence electrons in our Lewis structure .
所以Lewis结构里,有8个 价 电子。
In other words if the average energy of all the valence electrons .
换句话说,就是所有 价 电子的平均能量。
And I want to point out the difference between core electrons and valence electrons here .
我想指出的是,核电子和 价 电子,之间的区别。
It means cooperative sharing of valence electrons .
这意味着 价 电子的合作共享。
[化] 价电子