How many valence electrons does niobium have

Allotropes Some elements exist in several different structural forms, called allotropes.

Niobium is a chemical element ; it has symbol Nb formerly columbium , Cb and atomic number It is a light grey, crystalline, and ductile transition metal. Pure niobium has a Mohs hardness rating similar to pure titanium , [5] and it has similar ductility to iron. Niobium oxidizes in Earth's atmosphere very slowly, hence its application in jewelry as a hypoallergenic alternative to nickel. Niobium is often found in the minerals pyrochlore and columbite , hence the former name "columbium". Its name comes from Greek mythology : Niobe , daughter of Tantalus , the namesake of tantalum.

How many valence electrons does niobium have

This is a list of chemical elements and their atomic properties, ordered by Atomic number. Since valence electrons are not clearly defined for the d-block and f-block elements, there not being a clear point at which further ionisation becomes unprofitable, a purely formal definition as number of electrons in the outermost shell has been used. Contents move to sidebar hide. Article Talk. Read Edit View history. Tools Tools. Download as PDF Printable version. This article does not cite any sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Periodic table.

Glossary Group A vertical column in the periodic table. Main article: Isotopes of niobium. The history of Niobium.

Comprehensive data on the chemical element Niobium is provided on this page; including scores of properties, element names in many languages, most known nuclides of Niobium. Common chemical compounds are also provided for many elements. In addition technical terms are linked to their definitions and the menu contains links to related articles that are a great aid in one's studies. A list of reference sources used to compile the data provided on our periodic table of elements can be found on the main periodic table page. Kenneth Barbalace.

Niobium pronounced as ni-OH-bee-um belongs to the family of transition metals, denoted by the chemical symbol Nb. Defined as a soft and ductile metal with eighteen isotopes, it is available in the form of foil, sheet, tube, rod, and powder. When exposed to air oxygen at room temperature, it develops a bluish tint [1, 2, 11]. The metal is found associated with carbonatites in pyrochlore while its ore deposits have been discovered in the mining regions of Brazil, Canada, Russia, Zaire, and Nigeria who are also its major producers [11]. It is named after Niobe, the daughter of King Tantalus in Greek mythology, who was turned into a stone while crying after the murder of his fourteen children [1].

How many valence electrons does niobium have

Niobium is a chemical element ; it has symbol Nb formerly columbium , Cb and atomic number It is a light grey, crystalline, and ductile transition metal. Pure niobium has a Mohs hardness rating similar to pure titanium , [5] and it has similar ductility to iron. Niobium oxidizes in Earth's atmosphere very slowly, hence its application in jewelry as a hypoallergenic alternative to nickel. Niobium is often found in the minerals pyrochlore and columbite , hence the former name "columbium". Its name comes from Greek mythology : Niobe , daughter of Tantalus , the namesake of tantalum. The name reflects the great similarity between the two elements in their physical and chemical properties, which makes them difficult to distinguish. English chemist Charles Hatchett reported a new element similar to tantalum in and named it columbium. In , English chemist William Hyde Wollaston wrongly concluded that tantalum and columbium were identical. German chemist Heinrich Rose determined in that tantalum ores contain a second element, which he named niobium.

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MIT Press. The original name of Niobium was Columbium at the time of its discovery. In the last two applications, the low toxicity and iridescence produced by anodization are highly desired properties. Retrieved 19 September Niobium is added to glass to obtain a higher refractive index , making possible thinner and lighter corrective glasses. Aqueous chemistry Crystal structure Electron configuration Electronegativity Goldschmidt classification Term symbol. Bibcode : HydMe. Pure and Applied Chemistry. Retrieved 2 December Hidden categories: Articles with short description Short description is different from Wikidata Articles lacking sources from February All articles lacking sources.

In almost all cases, chemical bonds are formed by interactions of valence electrons in atoms.

In Robert J. Nor shall the RSC be in any event liable for any damage to your computer equipment or software which may occur on account of your access to or use of the Site, or your downloading of materials, data, text, software, or images from the Site, whether caused by a virus, bug or otherwise. Lists of metalloids by source Dividing line. A Textbook of Chemistry. Bibcode : Sci Category: Niobium view talk edit references. Columbite is found in Canada, Brazil, Australia, Nigeria and elsewhere. Universidade de Coimbra. Categories : Niobium Chemical elements Transition metals Refractory metals Chemical elements with body-centered cubic structure Native element minerals. University of Helsinki. Not to be confused with nihonium. Analytical Chemistry. Look up niobium in Wiktionary, the free dictionary.