Noble gases

The noble gases are a very inert group of gases located on the last group in the periodic table. They all have 8 valence electrons, with the exception of Helium, which has 2. They all have a hard time reacting with other elements, and have very few compounds. In addition, Neon in the least reactive element in the periodic table, with only hypothetical compounds that haven't been isolated. Some of the only compounds known are Xenon Trioxide, Xenon hexafluoide, Xenon Tetrafluoride, Krypton Hexafluoride, Argon Fluorohydride, and Helium difluoride.

There are 7 noble gases:

Helium- electron configuration: 1s2- Van der Waals Radius: 140 pm

Neon- electron configuration: [He] 2s2 2p6- Van der Waals radius: 154 pm

Argon- electron configuration: [Ne] 3s2 3p6- Van der Waals radius: 188 pm

Krypton- electron configuration: [Ar] 3d10 4s2 4p6- Van der Waals radius: 202 pm

Xenon- electron configuration: [Kr] 4d10 5s2 5p6- Van der Waals radius: 216 pm

Radon- electron configuration: [Xe] 4f14 5d10 6s2 6p6- Van der Waals radius: 200 pm

Oganesson- electron configuration: [Rn] 5f14 6d10 7s2 7p6- Van der Waals Radius: N/A

You may have noticed that all the noble gases except Helium end with "on"