| Label | Id | |
|---|---|---|
| actinoids | http://purl.obolibrary.org/obo/CHEBI_33320 | |
| estroncio | http://purl.obolibrary.org/obo/CHEBI_33324 | |
| rubidio | http://purl.obolibrary.org/obo/CHEBI_33322 | |
| rubidium | http://purl.obolibrary.org/obo/CHEBI_33322 | |
| 87Fr | http://purl.obolibrary.org/obo/CHEBI_33323 | |
| 88Ra | http://purl.obolibrary.org/obo/CHEBI_33325 | |
| Franzium | http://purl.obolibrary.org/obo/CHEBI_33323 | |
| francio | http://purl.obolibrary.org/obo/CHEBI_33323 | |
| francium | http://purl.obolibrary.org/obo/CHEBI_33323 | |
| radium | http://purl.obolibrary.org/obo/CHEBI_33325 | |
| actinoid atom | http://purl.obolibrary.org/obo/CHEBI_33320 | |
| strontium | http://purl.obolibrary.org/obo/CHEBI_33324 | |
| rubidium atom | http://purl.obolibrary.org/obo/CHEBI_33322 | |
| francium atom | http://purl.obolibrary.org/obo/CHEBI_33323 | |
| strontium atom | http://purl.obolibrary.org/obo/CHEBI_33324 |