lithium atom lithium-6 atom 6.015 WHXSMMKQMYFTQS-BJUDXGSMSA-N lithium-6 [6Li] The stable isotope of lithium with relative atomic mass 6.015122, 7.5 atom percent natural abundance and nuclear spin 1. 0 6.01512 [6Li] chebi_ontology lithium-6 (6)3Li (6)Li CHEBI:52621 InChI=1S/Li/i1-1