1.0 2015-02-28 11:50:50 UTC 2025-11-19 03:00:12 UTC FDB030037 Niobium Niobium, also known as niob or 41nb, is a member of the class of compounds known as homogeneous transition metal compounds. Homogeneous transition metal compounds are inorganic compounds containing only metal atoms,with the largest atom being a transition metal atom. Niobium can be found in a number of food items such as garlic, red beetroot, parsnip, and broccoli, which makes niobium a potential biomarker for the consumption of these food products. The English chemist Charles Hatchett reported a new element similar to tantalum in 1801 and named it columbium. In 1809, the English chemist William Hyde Wollaston wrongly concluded that tantalum and columbium were identical. The German chemist Heinrich Rose determined in 1846 that tantalum ores contain a second element, which he named niobium. In 1864 and 1865, a series of scientific findings clarified that niobium and columbium were the same element (as distinguished from tantalum), and for a century both names were used interchangeably. Niobium was officially adopted as the name of the element in 1949, but the name columbium remains in current use in metallurgy in the United States . Nb 92.9064 92.90637 niobium niobium 7440-03-1 [Nb] InChI=1S/Nb GUCVJGMIXFAOAE-UHFFFAOYSA-N belongs to the class of inorganic compounds known as homogeneous transition metal compounds. These are inorganic compounds containing only metal atoms,with the largest atom being a transition metal atom. Homogeneous transition metal compounds Inorganic compounds Homogeneous metal compounds Homogeneous transition metal compounds Homogeneous transition metal vanadium group element atom logp 0 ChemAxon iupac niobium ChemAxon average_mass 92.9064 ChemAxon mono_mass 92.90637 ChemAxon smiles [Nb] ChemAxon formula Nb ChemAxon inchi InChI=1S/Nb ChemAxon inchikey GUCVJGMIXFAOAE-UHFFFAOYSA-N ChemAxon polar_surface_area 0 ChemAxon refractivity 0 ChemAxon polarizability 1.78 ChemAxon rotatable_bond_count 0 ChemAxon acceptor_count 0 ChemAxon donor_count 0 ChemAxon physiological_charge 0 ChemAxon formal_charge 0 ChemAxon Specdb::MsMs 80586 Specdb::MsMs 80587 Specdb::MsMs 80588 Specdb::MsMs 141492 Specdb::MsMs 141493 Specdb::MsMs 141494 Broccoli Type 1 specific Brassica oleracea var. italica 36774 0.0006 0.0007 0.0005 mg/100 g Carrot Type 1 specific Daucus carota ssp. sativus 79200 0.000075 0.00008 0.00007 mg/100 g Cucumber Type 1 specific Cucumis sativus 3659 0.000189 0.000260891 0.0001 mg/100 g Dill Type 1 specific Anethum graveolens 40922 0.000095 0.00013 0.00006 mg/100 g Eggplant Type 1 specific Solanum melongena 4111 0.000055 0.00007 0.00004 mg/100 g Garden onion Type 1 specific Allium cepa 4679 0.000786 0.000791974 0.000779726 mg/100 g Garden tomato Type 1 specific Solanum lycopersicum 4081 0.00008 0.00009 0.00007 mg/100 g Garlic Type 1 specific Allium sativum 4682 0.000125 0.00014 0.00011 mg/100 g Green bell pepper Type 1 specific Capsicum annuum 4072 0.00005 0.00006 0.00004 mg/100 g Green zucchini Type 1 specific Cucurbita pepo var. cylindrica 0.000439 0.000666888 0.000211606 mg/100 g Italian sweet red pepper Type 1 specific Capsicum annuum 4072 0.0001 0.00011 0.00009 mg/100 g Japanese pumpkin Type 1 specific Cucurbita maxima 3661 0.000055 0.00006 0.00005 mg/100 g Orange bell pepper Type 1 specific Capsicum annuum 4072 0.001741 0.003159437 0.000322645 mg/100 g Parsnip Type 1 specific Pastinaca sativa 4041 0.000059 0.00006369 0.00005378 mg/100 g Potato Type 1 specific Solanum tuberosum 4113 0.0001 0.0001 0.0001 mg/100 g Red beetroot Type 1 specific Beta vulgaris var. rubra 0.00005 0.00006 0.00004 mg/100 g Red bell pepper Type 1 specific Capsicum annuum 4072 0.000521 0.000671597 0.000370768 mg/100 g Romaine lettuce Type 1 specific Lactuca sativa L. var. longifolia 0.000116 0.000133151 0.0001 mg/100 g Spinach Type 1 specific Spinacia oleracea 3562 0.00035 0.0005 0.0002 mg/100 g Sunburst squash (pattypan squash) Type 1 specific Cucurbita pepo var. clypeata 0.000026 0.00003489 0.00001758 mg/100 g Turnip Type 1 specific Brassica rapa var. rapa 51350 0.0001 0.00014 0.00006 mg/100 g White cabbage Type 1 specific Brassica oleracea L. var. capitata L. f. alba DC. 0.00006 0.00007 0.00005 mg/100 g Yellow bell pepper Type 1 specific Capsicum annuum 4072 0.001073 0.001283388 0.000862366 mg/100 g Yellow zucchini Type 1 specific Cucurbita pepo var. cylindrica 0.00005 0.00006 0.00004 mg/100 g