Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.
The short answer that it is a Noble gas. A slightly longer answer is that because of the configuration of their electron shells (more specifically their outermost electron shell contains as many electrons as it can sustainably maintain) these elements aren't as likely to bond with other elements.
To say that it won't chemically react with anything isn't accurate - however it is less reactive than any other known element.