So what we can actually directly compare is the dissociation energy or the bond strength of nitrogen versus hydrogen.

因此实际上我们可以直接进行比较,对氮分子与氢分子的离解能,或键的强度。

麻省理工公开课 - 化学原理课程节选

And when we talk about covalent bonds, there's 2 properties that we'll mostly focus on, and that's going to be thinking about the bond strength or the energy by which it stabilized when it bonds.

而当我们讨论共价键的时候，有两点特性是我们最关注的，那就是键的强度,或者说成键之后能量降低了多少。

麻省理工公开课 - 化学原理课程节选

This energy level diagram helps us understand the relationship between electron filling and bond strength.

能级图能帮助我们,理解电子填充,和键强的关系。

麻省理工公开课 - 固态化学导论课程节选

If we know that this is it the dissociation energy for a hydrogen atom, we can also say the bond strength for hydrogen molecule 424 is 424.

如果我们知道了这是一个氢分子的离解能,那么我们也可以说氢分子的键的强度,就是。

麻省理工公开课 - 化学原理课程节选

And this turns out to have a bond strength of 435 kilojoules per mole.

这证明有每摩尔435焦的,的共价能。

麻省理工公开课 - 固态化学导论课程节选

So, another way to talk about dissociation energy is simply to call it bond strength, it's the same thing, they're equal to each other.

讨论离解能的另外一种方式,是直接称它为键的强度，它们是一样的，彼此相等。

麻省理工公开课 - 化学原理课程节选

So, let's change our graph where we now have this zero point set as the two individuals hydrogen atoms, and then we see that our h 2 molecule is at the negative of the dissociation energy, or the negative what that bond strength is.

那么让我们把曲线图中的零点能改到,两个分离的氢原子处，那我们就会看到,氢分子就是负的离解能，或者负的键的强度。

麻省理工公开课 - 化学原理课程节选

So, what this lets us do now is directly compare, for example, the strength of a bond in terms of a hydrogen atom and hydrogen molecule, compared to any kind of molecule that we want to graph on top of it.

因此，这让我们现在可以做到直接进行比较，比如，将一个氢原子，和一个氢分子的键的强度，与任何其它类型的分子进行比较,我们只需要把它的曲线也画在这幅图上。

麻省理工公开课 - 化学原理课程节选