| Label | Id | |
|---|---|---|
| lanthanoid | http://purl.obolibrary.org/obo/CHEBI_33319 | |
| lanthanoids | http://purl.obolibrary.org/obo/CHEBI_33319 | |
| neon | http://purl.obolibrary.org/obo/CHEBI_33310 | |
| niton | http://purl.obolibrary.org/obo/CHEBI_33314 | |
| polonio | http://purl.obolibrary.org/obo/CHEBI_33313 | |
| polonium | http://purl.obolibrary.org/obo/CHEBI_33313 | |
| radon | http://purl.obolibrary.org/obo/CHEBI_33314 | |
| Hoe 933 | http://purl.obolibrary.org/obo/CHEBI_3331 | |
| neon atom | http://purl.obolibrary.org/obo/CHEBI_33310 | |
| polonium atom | http://purl.obolibrary.org/obo/CHEBI_33313 | |
| radium emanation | http://purl.obolibrary.org/obo/CHEBI_33314 | |
| radon atom | http://purl.obolibrary.org/obo/CHEBI_33314 | |
| elemental helium | http://purl.obolibrary.org/obo/CHEBI_33315 | |
| monoatomic helium | http://purl.obolibrary.org/obo/CHEBI_33315 | |
| lanthanoid atom | http://purl.obolibrary.org/obo/CHEBI_33319 |