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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. It was not until the early 20th century that niobium was first used commercially. Niobium is an important addition to high-strength low-alloy steels.
Appearance. move to sidebar hide. Help. Minerals containing the chemical element niobium. Pages in category "Niobium minerals" The following 41 pages are in this ...
Appearance. move to sidebar hide. Help Subcategories. This category has the following 4 subcategories, out of 4 total. ... Pages in category "Niobium" The following 6 ...
While niobium dust is an eye and skin irritant [19] and a potential fire hazard, elemental niobium on a larger scale is physiologically inert (and thus hypoallergenic) and harmless. It is often used in jewelry and has been tested for use in some medical implants. [117] [118] Niobium and its compounds thought to be slightly toxic. Short- and ...
Niobium(IV) iodide is a grey solid that reacts with water. [1] Niobium(IV) iodide is an orthorhombic crystal with space group Cmc2 1 (No. 36). [3] Its crystal is formed by NbI 6 octahedra connected by edges and also contains Nb-Nb bonds. At 348 to 417 °C, the crystal structure of niobium(IV) iodide changes. [4]
Niobium pentaiodide is the inorganic compound with the formula Nb 2 I 10. Its name comes from the compound's empirical formula, NbI 5. [1] It is a diamagnetic, yellow solid that hydrolyses readily. The compound adopts an edge-shared bioctahedral structure, which means that two NbI 5 units are joined by a pair of iodide bridges.
Niobium-92 is an extinct radionuclide [6] with a half-life of 34.7 million years, decaying predominantly via β + decay. Its abundance relative to the stable 93 Nb in the early Solar System, estimated at 1.7×10 −5 , has been measured to investigate the origin of p-nuclei .
Niobium diboride (NbB 2) ... Appearance grey powder Density: 6.97 g/cm 3: Melting point ~3050°C Boiling point: N/A Solubility in water. Insoluble Structure