Out of all the characters who encounter radium in this episode, the only one to emerge unscathed is the guy who comes face-to-face with Satan.
Like argon, today’s noble gas coincidentally features prominently in science fiction — albeit in name only. But krypton also takes a place in the science factual story of international weights and measures.
Cobalt is a tricksy little element, which means the scientists who’ve dealt with it the most are some of the cleverest people to have ever walked the Earth.
Chlorine is an element that causes some extreme reactions, and occasionally inspires some pretty extreme reactions in humans, too.