yttrium atom yttrium-89 atom (89)39Y yttrium-89 88.906 88.90584 VWQVUPCCIRVNHF-IGMARMGPSA-N 0 [89Y] chebi_ontology [89Y] The stable isotope of yttrium with relative atomic mass 88.905848, 100 atom percent natural abundance and nuclear spin 1/2. CHEBI:52622 (89)Y yttrium-89 InChI=1S/Y/i1+0