And, this is the difference in electronegativity between the two elements, all right?

就是在两个元素之间的,电负性的差别？

麻省理工公开课 - 固态化学导论课程节选

Electropositive is down to the left because that is where the metals live.

带正电性的元素常,在左边因为那里是金属区。

麻省理工公开课 - 固态化学导论课程节选

And then this second term, if we go to the Periodic Table, 2 we will find that the value here for hydrogen is 2.2 98 and the value for fluorine is 3.98.

再算上第二个条件，翻看元素周期表，我们查处H，F电负性分别为2,2。2，3。

麻省理工公开课 - 固态化学导论课程节选

So, he assumed, he referenced or normalized everything to fluorine.

所以他假设，将以用F作为一个标准,来估算其他元素的电负性。

麻省理工公开课 - 固态化学导论课程节选