The relationship between bond valence and bond covalency has been investigated by a semiempirical method.
用一种半经验方法研体材料中键电荷与键共性的关系。
A method to calculate new valence electronegativity and the ionicity of chemical bond of the transition metal elements is also presented here.
提出计算过态共半径的公式;提出计算过新态电负性和化学键的离子性的方法。
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This is especially true on Twitter, where just about everything takes on a political valence.
在推特上尤其如此,因为在推特上,几乎所有事情都带有治意味。
It only has two dimensions: valence and arousal.
效价和觉醒。
And the valence is actually quite negative, so you must have been a big fan.
而“抗体效价”项也呈现负值,因此你定他们的铁杆粉丝。
Like everything has a political valence to it.
就像切都有治价值样。
The resulting vapor was variable, so it was difficult to meansure its valence.
反复无常的。因些很难测量它的化合价。
These are highly reactive because they have seven valence electrons.
它们有很高的反应性,因为它们有七个价电子。
They tend to have the same number of valence electrons.
它们往往有相同数量的价电子。
So large, that the valence electrons aren't held very strongly by the nucleus.
如此之大,以至于价电子不会被原子核牢固地保持。
The political valence of this is kind of fascinating to me–about what side you're on.
这件事的治价值让我着迷——关于你站在哪边。
How many Valence electrons does sodium have?
钠有多少个价电子?
They would love nothing more than to get one more valence electron.
他们只想再得到个价电子。
Once again, it has one valence electron, one electron in its outermost shell.
同样,它有个价电子,个位于最外层的电子。
All of the elements in group two are going to have two Valence electrons.
第二组中的所有元素都有两个价电子。
And valence electrons are electrons in the outermost shell they tend to coincide, although there's a slightly different variation.
价电子最外层的电子,它们往往重合,尽管变化略有不同。
We could depict them as one, two, three, four Valence electrons.
我们可以将它们描述为个、两个、三个、四个价电子。
It summarizes all of the emotions that you have felt and how your decisions were valenced positive or negative an emotion.
它总结了您所感受到的所有情绪,以及您的决定如何对情绪产生积极或消极的影响。
Hydrogen in that first shell just wants to get to two valence electrons like helium has.
第个壳层中的氢只想像氦样获得两个价电子。
Because they have eight valence electrons.
因为它们有八个价电子。
Each of the hydrogens can feel like it has two Valence electrons.
每个氢都感觉像有两个价电子。
They have very similar properties and that's because they have two valence electrons, two electrons in their outermost shell.
它们有非常相似的特性,那因为它们有两个价电子,两个电子位于最外层。
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