has role has role inorganic molecular entity nonmetal atom s-block element atom macronutrient hydrogen atom 0 H Wasserstoff 1.00794 1H hydrogene WebElements:H hydrogen H [H] CHEBI:49637 CHEBI:49636 InChI=1S/H CHEBI:24634 hidrogeno hydrogen chebi_ontology YZCKVEUIGOORGS-UHFFFAOYSA-N 1.00783