The document discusses noble gases, listing helium, neon, argon, xenon, krypton, radon, and organesson as examples of noble gases. Noble gases are a group of chemical elements that are mostly unreactive due to their full outer electron shells, including helium, neon, argon, krypton, xenon, and radon.

1. Noble gases

2. Noble gases
Argon
Helium
Neon

3. Noble gases
•Xenon
•Krypton
•Radon
•Organesson