Noble_gas

Noble gas

The chemical elements in group VIIIA of the Periodic Table; specifically Helium, Neon, Argon, Krypton, Xenon and Radon.

These elements all have full outer electron shells, and so do not form chemical compounds easily. As the atoms get larger down the series, they become (slightly) more reactive, and Xenon has been induced to form a number of compunds with fluorine. Radon would be presumed to be more reactive, but as it is radioactive with a short half-life, its potential chemistry has not been explored.