He has two electrons here with the same set of quantum numbers. B but these are two separate hydrogen atoms.

因为我写了两个量子数,一样的电子,但这是在两个不同原子中啊。

麻省理工公开课 - 固态化学导论课程节选

He saw that if you take the atomic mass of chlorine, 2 add it to the atomic mass of iodine, divide by two, you get something that is really close to the atomic mass of bromine.

他看到，如果你将氯的原子质量，加上碘的原子质量，除以，得到的数将与,溴的原子质量很接近。

麻省理工公开课 - 固态化学导论课程节选

The number of electrons in an atom is deduced to be approximately equal to half the atomic weight.

原子中的电子数,将近是原子质量的一般。

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What you see is that the radius changes with atomic number for constant electron number.

对于等电子数的粒子，离子半径随着,原子数的变化而变化。

麻省理工公开课 - 固态化学导论课程节选

Maybe not. It has no protons, so therefore, it has no electrons Because proton number equals electron number, which means if it has no protons 0 its atomic number is zero.

也可能不会，这个元素没有质子，因此，也没有电子,因为质子数等于电子数，意味着它没有质子,它的原子序数为。

麻省理工公开课 - 固态化学导论课程节选