* [ChemicalEntity](ChemicalEntity.md) - An entity that can be described using using chemical properties.
* [Atom](Atom.md) - A material entity consisting of exactly one atomic nucleus and the electron(s) orbiting it.
* [AtomIonicForm](AtomIonicForm.md) - an atom type in which charge state is specified. Also known as (atom) ionic species
* [MonoatomicIon](MonoatomicIon.md) - An atom that has a charge
* [AtomAnion](AtomAnion.md) - A monoatomic ion that is negative
* [AtomCation](AtomCation.md) - A monoatomic ion that is positive
* [UnchargedAtom](UnchargedAtom.md) - An atom that has no charge
* [ChemicalElement](ChemicalElement.md) - generic form of an atom, with unspecified neutron or charge
* [FullySpecifiedAtom](FullySpecifiedAtom.md) - An atom (class) that has subatomic particle counts specified
* [Isotope](Isotope.md) - A specific subtype of an atom with a specified neutron number
* [Nuclide](Nuclide.md) - an atomic species characterized by the specific constitution of its nucleus
* [Radionuclide](Radionuclide.md) - an atom that has excess nuclear energy, making it unstable
but this is flattened. I don't know if this is an issue with how we are making the markdown or in mkdocs...
E.g https://cmungall.github.io/chem-schema/
the md says
but this is flattened. I don't know if this is an issue with how we are making the markdown or in mkdocs...