A couple of other things about hydrogen: hydrogen also, like other elements, has isotopes and we already saw that in 1766, Cavendish isolated atomic hydrogen and enunciated some of its properties.

一些关于氢的东西：,氢气，就像其他元素一样，有同位素，人们在1766年就发现了这一点，卡文迪许分离出原子氢,并且阐述了它的一些性质。

麻省理工公开课 - 固态化学导论课程节选