vanadium atom [V] 50.94396 chebi_ontology 23V vanadium V InChI=1S/V vanadium 0 LEONUFNNVUYDNQ-UHFFFAOYSA-N Vanadium 50.94150 vanadio CHEBI:9930 CHEBI:27274 CHEBI:27698 CAS:7440-62-2 KEGG:C06267 V WebElements:V vanadium group element atom