We call the bonds between these atoms covalent bonds.

我们将这些间的键称作共价键。

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

例如分中有着共价的联系。

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

通常情况下，不同的分通过间的共价化学键相连接。

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

SPN通常含有由共价键连接在一起的普通聚合物。

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

那么，通常，在共价键里，两个电在间被不平等共享。

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

现在在这里，我将这种键性共价键。

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

它们比引起间离键或共价键的力弱。

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

了使这些平行，让我们将共价连接更改共价连接。

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

要小心，因我们有共价连接，并与金属位点协调。

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

那是因它们共价键的强度。

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

这是疯狂的不稳定。 这基本上就像有一半的共价键悬在上。

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?

都是同一种元素， 它们都是用共价键结合在一起的，那有什么区别呢？

So we call this a non-polar covalent bond.

所以我们称非性共价键。

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

这是一个非性共价键，就像那样。

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

所以电负性的差异介于 1.5 和 2.1 间，介于性共价键和离键间。

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

这足以形成性共价键。

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，在这里我们将其性共价键。