Atomic number of niobium1/18/2024 Niobium is also somehow less electro-positive than the other elements of group 5 of the periodic table while it is similar in size with tantalum so as a result both chemical characteristics are same. Niobium even exhibits the properties of superconductivity. Titanium, chromium, cobalt are some other chemical elements used as alloys. More than this niobium is resistant to corrosion and it also gives dielectric oxide layers. In defiance of its high melting point niobium is a lower density metal. P235GH, P265GH are steel containing niobium as alloy.Ĭhemical Properties of Niobium: When Niobium is exposed to air in the room temperature it takes in a bluish tinge for extended periods. Niobium also reacts with oxygen and it requires to be worked in an inert atmosphere. The pure metal is soft and ductile it looks like steel or, when polished, like platinum. Often found in conjunction with tantalum, it was named after Niobe, the daughter of Tantalus in Greek mythology. When niobium is pure it is ductile as well as soft but due to all the impurities it becomes harder.Īlloying Behavior of Niobium : The quantity of niobium are usually used in the super alloys that also contain iron, nickel and cobalt in the proportion. niobium, Metallic chemical element, chemical symbol Nb, atomic number 41. Niobium has the highest critical temperature at the atmospheric pressure. At cryogenic temperatures niobium becomes super conductor too. The structure of niobium is body centered cubic crystal structure from zero till its melting point. Niobium is also a metal with an electron configuration at the outermost shells. Very less common known minerals that contain niobium are uranium, thorium and calcium and also all the rare earth metals. The Coltan also known as Coulumbite Tantalite are usually used in Pegmatite intrusions while in alkaline intrusive rocks too. Some examples are: Coltan and coulumbite. The minerals that are combined with niobium sometimes also contain. The free niobium is not present in the nature while only niobium combined with minerals are present. It is also said that existing of niobium in earth is greater while the high density of element is present in the earth’s core. Occurrence of Niobium : Niobium is known as the 34 th most abundant element in the earth. It also helps in differentiating between two elements. The periodic table is commonly used by chemists, researchers and chemistry students due to its arrangement of elements in periods and group. Tantalum, vanadium and dubnium are other members of group V of the periodic table. This fact has key implications for the building up of the periodic table of elements.Niobium belongs to the chemical elements belonging to group 05 i.e. The ordering of the electrons in the ground state of multielectron atoms, starts with the lowest energy state (ground state) and moves progressively from there up the energy scale until each of the atom’s electrons has been assigned a unique set of quantum numbers. ![]() It is the Pauli exclusion principle that requires the electrons in an atom to occupy different energy levels instead of them all condensing in the ground state. In the periodic table, the elements are listed in order of increasing atomic number Z. The number of electrons in each element’s electron shells, particularly the outermost valence shell, is the primary factor in determining its chemical bonding behavior. ![]() The configuration of these electrons follows from the principles of quantum mechanics. The chemical properties of the atom are determined by the number of protons, in fact, by number and arrangement of electrons. See also: Atomic Number – Does it conserve in a nuclear reaction? Atomic Number and Chemical PropertiesĮvery solid, liquid, gas, and plasma is composed of neutral or ionized atoms. It is the electrons that are responsible for the chemical bavavior of atoms, and which identify the various chemical elements. In a neutral atom there are as many electrons as protons moving about nucleus. The total electrical charge of the nucleus is therefore +Ze, where e (elementary charge) equals to 1,602 x 10 -19 coulombs. Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z. 2000), decaying to 92 Zr by electron capture. Niobium has one stable isotope (93) with an atomic mass of 92.90637(2) (CIAAW 2015) The now extinct isotope 92 Nb with a half-life of 34.7 Ma is currently being investigated as a potential chronometer in cosmochemistry (e.g., Mnker et al. The nucleus is composed of protons and neutrons. Niobium is a transition metal of low toxicity with the atomic number of 41. ![]() ![]() The atom consist of a small but massive nucleus surrounded by a cloud of rapidly moving electrons.
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