Slot: symbol short symbol for chemical entity, e.g. K, C-16 URI: chemrof:symbol Domain and Range None → 0..1 String Parents is_a: information property Children chemical element➞symbol Used by Atom AtomAnion AtomCation AtomIonicForm FullySpecifiedAtom Isobar Isotope MonoatomicIon Nuclide PartiallySpecifiedAtom Radionuclide UnchargedAtom