The relationship between bond valence and bond covalency has been investigated by a semiempirical method.
用一验方法研究了固体材料中键电荷与键共性关系。
A method to calculate new valence electronegativity and the ionicity of chemical bond of the transition metal elements is also presented here.
提出了计算过渡元素态共公式;提出了计算过渡元素新态电负性和化学键离子性方法。
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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意味。
It only has two dimensions: valence and arousal.
和觉醒。
And the valence is actually quite negative, so you must have been a big fan.
而“抗体”一项也呈现负值,因此你一定是他们铁杆粉丝。
Like everything has a political valence to it.
就像一切都具有值一样。
The resulting vapor was variable, so it was difficult to meansure its valence.
蒸气是反复常。因些很难测量它化合。
They tend to have the same number of valence electrons.
它们往往具有相同数量电子。
So large, that the valence electrons aren't held very strongly by the nucleus.
如此之大,以至于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.
这件事值让我着迷——关于你站在哪一边。
Once again, it has one valence electron, one electron in its outermost shell.
同样,它有一个电子,一个位于最外层电子。
And valence electrons are electrons in the outermost shell they tend to coincide, although there's a slightly different variation.
电子是最外层电子,它们往往重合,尽管变化略有不同。
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所有情绪,以及您决定如何对情绪产生积极或消极影响。
Hydrogen in that first shell just wants to get to two valence electrons like helium has.
第一个壳层中氢只想像氦一样获得两个电子。
Because they have eight valence electrons.
因为它们有八个电子。
They have very similar properties and that's because they have two valence electrons, two electrons in their outermost shell.
它们具有非常相似特性,那是因为它们有两个电子,两个电子位于最外层。
And hydrogen is a little bit of a strange character because hydrogen isn't trying to get to eight valence electrons.
氢有点奇怪,因为氢并没有试图获得八个电子。
Helium has two Valence electrons, its electron configuration is one S two.
氦有两个电子,其电子构型为一S二。
How many valence electrons does it have?
它有多少个电子?
One, two, three, four, five, six valence electrons.
一、二、三、四、五、六个电子。
It has a completely filled valence shell.
它有一个完全填充壳。
They reside in an atom’s outer shell as valence electrons and are easily plucked off and carried around, when acted upon by an outside force.
它们以电子形式存在于原子外壳中, 当受到外力作用时, 它们很容易被剥离并随身携带。
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