And we can calculate the ionization energy.
我们能够计算电离能。
So, we can now calculate the ionization energy here.
我们可以计算这的电离能。
That is to say the ionization energy of the second most electron.
这是二级电离能，这就是说，电子数第二多的电离能。
We will never have a case where ionization energy is negative.
我们绝不会见到一个,电离能是负值的情况。
Let's take a look at the lowest ionization energy in the center case.
让我们来看一下电离能最低在中间的情况。
So, in terms of ionization energy, we would expect to see sulfur in the middle.
因此，按照电离能，我们应该把硫放在中间。
So, this is first ionization energy, let's think about second ionization energy.
那么，这就是第一电离能，下面让我们来想一想第二电离能。
The ionization energy, of course, is just the negative of the binding energy.
电离能，我们知道也就是,负的结合能。
So if we want to solve for ionization energy, we can just rearrange this equation.
因此，要想解出电离能，我们只需要将这个方程中的项变换一下位置。
So, thinking about ionization energy, which atom would you put in the middle here?
那么，从电离能的角度考虑，大家会把哪个原子放在中间？
We know that binding energy is always negative, ionization energy is always positive.
我们知道结合能，总是负的，电离能总是正的。
We know that binding energy is always negative, ionization energy is always positive.
我们知道结合能，总是负的，电离能总是正的。
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