What is Group 0 called?

1. The group 0 elements are known as Noble gases.
2. Group 18 elements are called group 0 when noble gases were discovered because they are inert in nature.
3. Due to the inert nature they do not form any bond with the other atoms.
4. Because of such property they are monoatomic in nature.
5. They do not lose or gain electrons because they contain 8 electrons in their outermost valence shell.
6. The group 0 elements are as follows: Helium$\left(\mathrm{He}\right)$, Neon$\left(\mathrm{Ne}\right)$, Argon$\left(\mathrm{Ar}\right)$, Krypton$\left(\mathrm{Kr}\right)$, Xenon$\left(\mathrm{Xe}\right)$, Radon$\left(\mathrm{Rn}\right)$.