We call the bonds between these atoms covalent bonds.

我们将这些子之间的键称作共价键。

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

例如分子中子有着共价的联。

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的普聚合物。

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

常情况下，同的分子子间的共价化学键相连接。

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

那么，常，在共价键里，两个电子在子之间被平等共享。

These are materials made of polymers, or chains of molecules, that are assembled together using non-covalent bonds.

它们由聚合物或分子链组成，这些聚合物或分子链用非共价键聚集在一起。

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。

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。

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

它们比引起子间离子键或共价键的力弱。

So by covalently attaching and by coordinating to metal sites.

因此, 共价连接和协调金属位点。

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。

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.

那是因为它们共价键的强度。

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

这是疯狂的稳定。 这基本上就像有一半的共价键悬在子上。

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。

Lower than 1.7, in the polar covalent range.

低于1.7，在极性共价范围内。

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

子都是同一种元素， 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 之间，介于极性共价键和离子键之间。