Here's why:

* Atomic Structure: Atoms are made up of a central nucleus containing protons and neutrons, surrounded by a cloud of electrons.

* Electron Shells: Electrons are organized into energy levels called shells. These shells are not rings, but rather regions of space where electrons are likely to be found.

* Helium's Configuration: Helium has only two electrons which occupy the first shell, which is also the lowest energy level.

* No Further Shells: Since the first shell is filled with the two electrons, helium does not have any further shells or rings.

Therefore, while the term "ring" is sometimes used informally to describe electron shells, helium has no rings in its atomic structure.