the state in which all electrons have the lowest possible energy. The electron configuration of the chemical element describes the ground state, i.e. Actinium gave the name to the actinide series, a group of 15 similar elements between actinium and lawrencium in the periodic table. Our Privacy Policy is a legal statement that explains what kind of information about you we collect, when you visit our Website. Berkelium is a member of the actinide and transuranium element series. Gadolinium belongs to a rare earth elements (it is one of a set of seventeen chemical elements in the periodic table). Mendelevium is a chemical element with atomic number 101 which means there are 101 protons and 101 electrons in the atomic structure. These data are synthesized, assessed, and discussed in … The next six electrons will go in the 2p orbital. Introduces stoichiometry and explains the differences between molarity, molality and normality. All of the alkali metals have a single valence electron in the outer electron shell, which is easily removed to create an ion with a positive charge – a cation, which combines with anions to form salts. al. Significant concentrations of boron occur on the Earth in compounds known as the borate minerals. An up-to-date periodic table with detailed but easy to understand information Our Website follows all legal requirements to protect your privacy. Sublimation The transition of a substance directly from the solid to the gas phase without passing through a liquid phase. Uranium is a silvery-white metal in the actinide series of the periodic table. Liquid nitrogen (made by distilling liquid air) boils at 77.4 kelvins (−195.8°C) and is used as a coolant. It is more stable to have a half full (5) or full (10) d orbital, so the Copper atom will "borrow" an electron from the 4s orbital in order to fill the 3d orbital. Helium is unique since its valence shell consists of a single s-orbital. The chemical symbol for Curium is Cm. Approximately 60–70% of thallium production is used in the electronics industry. Similarly, adding electrons results in a negative oxidation state. Gadolinium is a chemical element with atomic number 64 which means there are 64 protons and 64 electrons in the atomic structure. The chemical symbol for Caesium is Cs. Titanium is a lustrous transition metal with a silver color, low density, and high strength. Cerium is a soft, ductile and silvery-white metal that tarnishes when exposed to air, and it is soft enough to be cut with a knife. Discoverer: Corson, Dale R. and Mackenzie, K. R. The actinide or actinoid series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium. At 0.099%, phosphorus is the most abundant pnictogen in the Earth’s crust. Copper is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. It is obtained chiefly from the mineral cassiterite, which contains tin dioxide. Lead is a chemical element with atomic number 82 which means there are 82 protons and 82 electrons in the atomic structure. The electron configuration is the number of electrons in each energy level of an element. Rhodium is a rare, silvery-white, hard, corrosion resistant and chemically inert transition metal. Tantalum is a chemical element with atomic number 73 which means there are 73 protons and 73 electrons in the atomic structure. Can Prairie Dogs be Managed Utilizing Reconciliation Ecology? Its physical and chemical properties are most similar to its heavier homologues strontium and barium. The Cookies Statement is part of our Privacy Policy. The chemical symbol for Californium is Cf. Common chemical compounds are also provided for many elements. Electron configuration The arrangements of electrons above the last (closed shell) noble gas. These elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare earth elements. Mercury is a chemical element with atomic number 80 which means there are 80 protons and 80 electrons in the atomic structure. Includes Concise Form of Electron Configuration Notation and Californium (Cf). Gallium does not occur as a free element in nature, but as gallium(III) compounds in trace amounts in zinc ores and in bauxite. Iridium is a very hard, brittle, silvery-white transition metal of the platinum group, iridium is generally credited with being the second densest element (after osmium). Americium is a transuranic member of the actinide series, in the periodic table located under the lanthanide element europium, and thus by analogy was named after the Americas. Therefore the C electron configuration will be 1s 2 2s 2 2p 2. Iodine is the least abundant of the stable halogens, being the sixty-first most abundant element. The electron configuration of lithium is [He]2s1.The electron configuration of fluorine is [He]2s2.2p5. Astatine is the rarest naturally occurring element on the Earth’s crust. As an approximate rule, electron configurations are given by the Aufbau principle and the Madelung rule. The chemical symbol for Europium is Eu. Elemental rubidium is highly reactive, with properties similar to those of other alkali metals, including rapid oxidation in air. The chemical symbol for Zirconium is Zr. Lanthanum is a soft, ductile, silvery-white metal that tarnishes rapidly when exposed to air and is soft enough to be cut with a knife. The electron configuration of F is, 1s2 2s2 2p5. Polonium is a rare and highly radioactive metal with no stable isotopes, polonium is chemically similar to selenium and tellurium, though its metallic character resembles that of its horizontal neighbors in the periodic table: thallium, lead, and bismuth. 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