Name the noble gases found in traces in the atmosphere.

Noble gases:

1. The noble gases have fully filled the outermost shell.
2. Due to this, they are stable, and they do not react with other elements.

Noble gases found in traces in the atmosphere:

1. Helium $\mathbf{\left(}\mathbf{He}\mathbf{\right)}$
2. Neon $\mathbf{\left(}\mathbf{Ne}\mathbf{\right)}$
3. Argon $\mathbf{\left(}\mathbf{Ar}\mathbf{\right)}$
4. Krypton $\mathbf{\left(}\mathbf{Kr}\mathbf{\right)}$
5. Xenon $\mathbf{\left(}\mathbf{Xe}\mathbf{\right)}$
6. Radon $\mathbf{\left(}\mathbf{Rn}\mathbf{\right)}$