Helium

Why is Helium considered a noble gas? What are the characteristics of noble gases?

List other gases in the noble family.

Asked by BookRagsHelper on 28 Nov 07:06

Last updated by anonymous on 29 Nov 12:02

1 Answers

Answered by Dr. John Carmen on 29 Nov 00:03

Many mistakenly believe that a characteristic of noble gases is that they have to have 8 electrons. This is, of course, not true. Noble gases simply must have a full outer shell. The first shell should only have two electrons (which is what helium has). Other noble gases include such substances as neon, argon, krypton, xenon, and radon