List of Noble Gases
These elements are noble gases, sometimes called inert gases. Atoms of belonging to the noble gas group have completely filled outer electron shells. Each element is non-reactive, has high ionization energy, electronegativity near zero, and low boiling point.
Helium
Neon
Argon
Krypton
Xenon
Radon
Ununoctium presumably would behave as a noble gas.
For more information about the noble gases:
Noble Gas Properties
