We call the bonds between these atoms covalent bonds.

我们将这些原子之间键称作共价键。

For example, take molecules, atoms held together by covalent bonds.

例如子中原子有着共价联系。

Normally, different molecules are connected by covalent chemical bonds between their atoms.

常情况下，不子过原子间共价化学键相连接。

SPNs do often contain conventional polymers that are held together by covalent bonds.

SPN常含有由共价键连接在一起普聚合物。

Now, remember that in a covalent bond two electrons are shared, usually unequally, between atoms.

，常，在共价键里，两个电子在原子之间被不平等共享。

Now here, I'm treating this bond as a polar covalent bond.

现在在这里，我将这种键视为极性共价键。

They're weaker than the forces that cause ionic or covalent bonds between atoms.

它们比引起原子间离子键或共价键力弱。

To make those parallel, let's change covalent attachment to covalently attaching.

为了使这些平行，让我们将共价连接更改为共价连接。

Be careful because we've got covalent attachment, and coordinating to metal sites.

要小心，因为我们有共价连接，并与金属位点协调。

That's because of the strength of their covalent bonds.

是因为它们共价键强度。

This is crazy unstable. It's basically like having half of covalent bond dangling off the atom.

这是疯狂不稳定。 这基本上就像有一半共价键悬在原子上。

So I'm going to say there's a covalent bond to start with.

所以我要说首先是共价键。

Lower than 1.7, in the polar covalent range.

低于1.7，在极性共价范围内。

So to start with, I'm going to pretend like there's a covalent bond between the sodium and the chlorine.

所以首先，我要假装钠和氯之间存在共价键。

The atoms are all of the same element and they're all bonded together with covalent bonds, so what's the difference?

原子都是一种元素， 它们都是用共价键结合在一起，有什区别呢？

So we call this a non-polar covalent bond.

所以我们称之为非极性共价键。

This is a non-polar covalent bond, like that.

这是一个非极性共价键，就像样。

So the difference in electronegativity is somewhere between 1.5 and 2.1, between a polar covalent bond and an ionic bond.

所以电负性差异介于 1.5 和 2.1 之间，介于极性共价键和离子键之间。

And that's enough to have a polar covalent bond.

这足以形成极性共价键。

So if we go back up here to carbon and lithium, here we treat it like a polar covalent bond.

因此， 如果我们回到碳和锂，在这里我们将其视为极性共价键。