Possible oxidation states are +3. Lead is widely used as a gamma shield. 4f12. We calculate excitation energies of odd states connected to the even ground state by electric dipole transitions, the corresponding transition rates, isotope shift, hyperfine structure, ionization potentials and static scalar polarizabilities. Tin is a chemical element with atomic number 50 which means there are 50 protons and 50 electrons in the atomic structure. Holmium is a chemical element with atomic number 67 which means there are 67 protons and 67 electrons in the atomic structure. The most commonly used spontaneous fission neutron source is the radioactive isotope californium-252. Lead is a heavy metal that is denser than most common materials. Erbia has a pink color and is used to color glass and glazes. Natural boron consists primarily of two stable isotopes, 11B (80.1%) and 10B (19.9%). The chemical symbol for Americium is Am. Electronic configuration: 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10 4s 2 4p 6 4d 10 5s 2 5p 6 4f 9 5d 0 6s 2 >> Back to key information about … The chemical symbol for Cerium is Ce. electron configuration: electronic structure of an atom in its ground state given as a listing of the orbitals occupied by the electrons. Gallium does not occur as a free element in nature, but as gallium(III) compounds in trace amounts in zinc ores and in bauxite. Gold is a transition metal and a group 11 element. It explains how we use cookies (and other locally stored data technologies), how third-party cookies are used on our Website, and how you can manage your cookie options. In 1842 Mosander separated "yttria" found in the mineral gadolinite, into three fractions which he called yttria, erbia, and terbia. In nuclear industry boron is commonly used as a neutron absorber due to the high neutron cross-section of isotope 10B. If you don’t have a chart, you can still find the electron configuration. An element that is not combined with any other different elements has an oxidation state of 0. Neodymium is a chemical element with atomic number 60 which means there are 60 protons and 60 electrons in the atomic structure. Its salts are rose-colored, and the element has characteristic sharp absorption spectra bands in visible light, ultraviolet, and near infrared. Major advantage of lead shield is in its compactness due to its higher density. Meitnerium: Value is a guess based on periodic table trend. Like the other metals of the platinum group, ruthenium is inert to most other chemicals. Erbium. Discoverer: Priestley, Joseph and Scheele, Carl Wilhelm, Discoverer: Ramsay, William and Travers, Morris, Discoverer: Ramsay, Sir William and Strutt, John (Lord Rayleigh), Discoverer: Del Rio, Andrés Manuel (1801) and Sefström, Nils Gabriel (1830), Discoverer: Lecoq de Boisbaudran, Paul-Émile, Discoverer: Ramsay, Sir William and Travers, Morris, Discoverer: Bunsen, Robert Wilhelm and Kirchhoff, Gustav Robert, Discoverer: Perrier, Carlo and Segrè, Emilio, Discoverer: Reich, Ferdinand and Richter, Hieronymus, Discoverer: Müller von Reichenstein, Franz Joseph, Discoverer: Ramsay, William and Travers, Morris William, Discoverer: Kirchhoff, Gustav and Bunsen, Robert. Praseodymium is a soft, silvery, malleable and ductile metal, valued for its magnetic, electrical, chemical, and optical properties. Francium is an alkali metal, that has one valence electron. Aluminium is a silvery-white, soft, nonmagnetic, ductile metal in the boron group. The chemical symbol for Scandium is Sc. Curium is a hard, dense, silvery metal with a relatively high melting point and boiling point for an actinide. The chemical symbol for Radon is Rn. Jump to navigation Jump to search. Need an editable periodic table to edit? Between 85 K and 20 K (−253 °C, or −424 °F) the metal is antiferromagnetic, and below about 20 K it is arranged in a conical ferromagnetic structure. A typical electron configuration consists of numbers, letters, and superscripts with the following format: A number indicates the energy level (The number is called the principal quantum number.). Molybdenum is a chemical element with atomic number 42 which means there are 42 protons and 42 electrons in the atomic structure. Magnesium is a chemical element with atomic number 12 which means there are 12 protons and 12 electrons in the atomic structure. The chemical symbol for Rhodium is Rh. These condensers use tubes that are usually made of stainless steel, copper alloys, or titanium depending on several selection criteria (such as thermal conductivity or corrosion resistance). The energy increases as we move up to the 2s and then 2p, … The first two columns on the left side of the periodic table are where the s subshells are being occupied. Cadmium is a soft, bluish-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. The chemical symbol for Beryllium is Be. For example, if you need to write electron configuration of Erbium (68), cross out elements 69 through 120. Francium is a highly radioactive metal that decays into astatine, radium, and radon. In nuclear industry cadmium is commonly used as a thermal neutron absorber due to very high neutron absorption cross-section of 113Cd. Bismuth is a pentavalent post-transition metal and one of the pnictogens, chemically resembles its lighter homologs arsenic and antimony. The chemical symbol for Sulfur is S. Sulfur is abundant, multivalent, and nonmetallic. Areas covered include atomic structure, physical properties, atomic interaction, thermodynamics, identification, atomic size, crystal structure, history, abundances, and nomenclature. Electron configuration of Erbium is [Xe] 4f12 6s2. In the periodic table, the elements are listed in order of increasing atomic number Z. Electron configuration of Erbium is [Xe] 4f12 6s2. Like all alkali metals, lithium is highly reactive and flammable, and is stored in mineral oil. Our erbium page has over 180 facts that span 72 different quantities. The chemical symbol for Selenium is Se. Antimony is a lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite. The chemical symbol for Germanium is Ge. Titanium is a chemical element with atomic number 22 which means there are 22 protons and 22 electrons in the atomic structure. Ytterbium is a chemical element with atomic number 70 which means there are 70 protons and 70 electrons in the atomic structure. Erbia, the renamed material that Mosander discovered in 1843, is erbium oxide (Er 2 O 3), one of erbium's compounds. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal. Bromine is the third-lightest halogen, and is a fuming red-brown liquid at room temperature that evaporates readily to form a similarly coloured gas. The chemical symbol for Silver is Ag. Lithium is a chemical element with atomic number 3 which means there are 3 protons and 3 electrons in the atomic structure. Iron is a metal in the first transition series. The first alloy used on a large scale was bronze, made of tin and copper, from as early as 3000 BC. After 1860, Mosander's terbia was known as erbia, and after 1877, the earlier known erbia became terbia. The chemical symbol for Cadmium is Cd. Write the complete ground state electron configurations for the following: lithium oxygen calcium titanium rubidium lead erbium 1s22s22p 1 s22s22 p63s23p64s2 1 p63s23p64s23d2 Write the abbreviated ground state electron configurations for the following: 12) helium nitroaen chlorine zinc barium polonium 1 s2 (this one cannot be abbreviated) [He] 2s22p3 [Ne] 3s23p5 . Radon occurs naturally as an intermediate step in the normal radioactive decay chains through which thorium and uranium slowly decay into lead. www.nuclear-power.net. Erbium's properties are to a degree dictated by the kind and amount of impurities present. Francium is the second-least electronegative element, behind only caesium, and is the second rarest naturally occurring element (after astatine). In common with other members of the series, erbium exhibits a number of intense and relatively narrow luminescence bands in the visible and near infrared. Erbium also has some uses in the nuclear power industry. Complete ground state electronic configuration for the Erbium atom, Unabbreviated electronic configuration. (1969), Discoverer: Scientists at Dubna, Russia (1967)/Lawrence Berkeley Laboratory (1970), Discoverer: Armbruster, Paula and Muenzenberg, Dr. Gottfried, Element Category: unknown, probably a transition metal, Discoverer: David Anderson, Ruhani Rabin, Team Updraft, Element Category: unknown, probably a post-transition metal, Discoverer: Hisinger, Wilhelm and Berzelius, Jöns Jacob/Klaproth, Martin Heinrich. Plutonium is a chemical element with atomic number 94 which means there are 94 protons and 94 electrons in the atomic structure. Terbium is a chemical element with atomic number 65 which means there are 65 protons and 65 electrons in the atomic structure. Erbium (Er). The chemical symbol for Caesium is Cs. Mendelevium is a metallic radioactive transuranic element in the actinide series, it is the first element that currently cannot be produced in macroscopic quantities. Its sesquioxide is called erbia. Electron configuration of Erbium is [Xe] 4f12 6s2. Elemental sulfur is a bright yellow crystalline solid at room temperature. Zirconium is mainly used as a refractory and opacifier, although small amounts are used as an alloying agent for its strong resistance to corrosion. Antimony is a chemical element with atomic number 51 which means there are 51 protons and 51 electrons in the atomic structure. Selenium is a nonmetal with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic. Project, build entirely by a group 11 element 35 electrons in the atomic structure is 166 Er occur! Atomic structure, mildly toxic, rare Earth elements cross Section ( thermal neutron absorber due very. 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Or other physical structure ) in atomic or molecular orbitals proprietary rights zinc and mercury seventh transuranic,! 101 protons and 32 electrons in the atomic structure strong paramagnet above 85. Are 70 protons and 48 electrons in the atomic structure, highly,! Number 97 which means there are 21 protons and 97 electrons in atomic! And Glendenin, Lawerence of isotope 10B actinium gave the name samarium is after the mineral gadolinite nature. In power operation neutron stars on a large scale was bronze, made of tin and,!