Lutetium is a silvery white metal, which resists corrosion in dry air, but not in moist air. Thulium is the thirteenth and third-last element in the lanthanide series. The chemical symbol for Copper is Cu. Discoverer: McMillan, Edwin M. and Abelson, Philip H. Discoverer: Glenn T. Seaborg, Joseph W. Kennedy, Edward M. McMillan, Arthur C. Wohl, Discoverer: Glenn T. Seaborg, Ralph A. James, Leon O. Morgan, Albert Ghiorso, Discoverer: Glenn T. Seaborg, Ralph A. James, Albert Ghiorso, Discoverer: Stanley G. Thompson, Glenn T. Seaborg, Kenneth Street, Jr., Albert Ghiorso, Discoverer: Stanley G. Thompson, Glenn T. Seaborg, Bernard G. Harvey, Gregory R. Choppin, Albert Ghiorso, Discoverer: Albert Ghiorso, Glenn T. Seaborg, Torbørn Sikkeland, John R. Walton, Discoverer: Albert Ghiorso, Torbjørn Sikkeland, Almon E. Larsh, Robert M. Latimer. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal. Cerium is a chemical element with atomic number 58 which means there are 58 protons and 58 electrons in the atomic structure. The elements in increasing order of atomic radius: oxygen, carbon, aluminum, potassium ... Atomic radius increases down each group (column) of the periodic table because of the addition of electrons to higher energy levels, which are further away from the nucleus and the pull of nucleus weakens. The first alloy used on a large scale was bronze, made of tin and copper, from as early as 3000 BC. Iodine is the least abundant of the stable halogens, being the sixty-first most abundant element. Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z. Terbium is a chemical element with atomic number 65 which means there are 65 protons and 65 electrons in the atomic structure. Cerium is also traditionally considered one of the rare-earth elements. Lawrencium is the final member of the actinide series. The chemical properties of the atom are determined by the number of protons, in fact, by number and arrangement of electrons. Californium is an actinide element, the sixth transuranium element to be synthesized, and has the second-highest atomic mass of all the elements that have been produced in amounts large enough to see with the unaided eye (after einsteinium). It is a noble metal and a member of the platinum group. Germanium is a chemical element with atomic number 32 which means there are 32 protons and 32 electrons in the atomic structure. Arsenic is a metalloid. It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds. Only about 5×10−8% of all matter in the universe is europium. Name: Oxygen. The chemical symbol for Carbon is C. It is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds. In contrast to conductors, electrons in a semiconductor must obtain energy (e.g. The SI unit of electrical resistivity is the ohm-metre (Ω⋅m). Californium is a chemical element with atomic number 98 which means there are 98 protons and 98 electrons in the atomic structure. Mendelevium is a metallic radioactive transuranic element in the actinide series, it is the first element that currently cannot be produced in macroscopic quantities. Technetium is the lightest element whose isotopes are all radioactive; none are stable. Curium is a hard, dense, silvery metal with a relatively high melting point and boiling point for an actinide. In dense oxygen, e.g. Bismuth is a chemical element with atomic number 83 which means there are 83 protons and 83 electrons in the atomic structure. Plutonium is an actinide metal of silvery-gray appearance that tarnishes when exposed to air, and forms a dull coating when oxidized. Caesium is a chemical element with atomic number 55 which means there are 55 protons and 55 electrons in the atomic structure. The chemical symbol for Aluminum is Al. In nuclear reactors, promethium equilibrium exists in power operation. The chemical symbol for Lanthanum is La. Chlorine is a chemical element with atomic number 17 which means there are 17 protons and 17 electrons in the atomic structure. The chemical symbol for Europium is Eu. Palladium, platinum, rhodium, ruthenium, iridium and osmium form a group of elements referred to as the platinum group metals (PGMs). Astatine is the rarest naturally occurring element on the Earth’s crust. Vol. The chemical symbol for Americium is Am. Germanium is a lustrous, hard, grayish-white metalloid in the carbon group, chemically similar to its group neighbors tin and silicon. Discover the world's research 17+ million members Despite its high price and rarity, thulium is used as the radiation source in portable X-ray devices. The chemical symbol for Hafnium is Hf. 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. The atomic functions are represented as Gaussians, which are poor atomic functions but facile integrands in many‐center … It readily forms hard, stable carbides in alloys, and for this reason most of world production of the element (about 80%) is used in steel alloys, including high-strength alloys and superalloys. Tungsten is an intrinsically brittle and hard material, making it difficult to work. Its properties are thus intermediate between those of chlorine and iodine. Gadolinium belongs to a rare earth elements (it is one of a set of seventeen chemical elements in the periodic table). Magnesium is a chemical element with atomic number 12 which means there are 12 protons and 12 electrons in the atomic structure. It is an extremely reactive element and a strong oxidising agent: among the elements, it has the highest electron affinity and the third-highest electronegativity, behind only oxygen and fluorine. Lead is a chemical element with atomic number 82 which means there are 82 protons and 82 electrons in the atomic structure. Holmium is a relatively soft and malleable silvery-white metal. The chemical symbol for Argon is Ar. The chemical symbol for Nobelium is No. Although neodymium is classed as a rare earth, it is a fairly common element. 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). Neodymium is a chemical element with atomic number 60 which means there are 60 protons and 60 electrons in the atomic structure. The chemical symbol for Francium is Fr. The mention of names of specific companies or products does not imply any intention to infringe their proprietary rights. Rhodium is a chemical element with atomic number 45 which means there are 45 protons and 45 electrons in the atomic structure. The chemical symbol for Boron is B. The chemical symbol for Lawrencium is Lr. m. Electrical resistivity and its converse, electrical conductivity, is a fundamental property of a material that quantifies how strongly it resists or conducts the flow of electric current. After hydrogen and helium, oxygen is the third-most abundant element in the universe by mass. Hafnium is a lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in many zirconium minerals. Niobium is a chemical element with atomic number 41 which means there are 41 protons and 41 electrons in the atomic structure. dHacid(0K) = 389.11±0.014 Rhodium is a rare, silvery-white, hard, corrosion resistant and chemically inert transition metal. Selenium is a chemical element with atomic number 34 which means there are 34 protons and 34 electrons in the atomic structure. The chemical symbol for Lithium is Li. In nuclear industry, especially natural and artificial samarium 149 has an important impact on the operation of a nuclear reactor. Holmium is a chemical element with atomic number 67 which means there are 67 protons and 67 electrons in the atomic structure. where H0 describes the atomic energy levels E1, E2, E3, and the last term describes the dipole interaction between the atom and the laser field. The chemical symbol for Cadmium is Cd. The chemical symbol for Radon is Rn. The first energy shell holds 2 electrons. The chemical symbol for Krypton is Kr. Ytterbium is a chemical element with atomic number 70 which means there are 70 protons and 70 electrons in the atomic structure. The results obtained with these atomic codes have been compared with MCHF calculations and experimental values from the National Institute of Standards and Technology (NIST) database. The chemical symbol for Neodymium is Nd. A low resistivity indicates a material that readily allows the flow of electric current. MG93. It is obtained chiefly from the mineral cassiterite, which contains tin dioxide. Curium is a chemical element with atomic number 96 which means there are 96 protons and 96 electrons in the atomic structure. Used in steel making, welding, water purification, cement. Our Privacy Policy is a legal statement that explains what kind of information about you we collect, when you visit our Website. Praseodymium is a soft, silvery, malleable and ductile metal, valued for its magnetic, electrical, chemical, and optical properties. The chemical symbol for Gallium is Ga. Gallium has similarities to the other metals of the group, aluminium, indium, and thallium. Nickel belongs to the transition metals and is hard and ductile. Melting Point: -218.4 °C (54.750008 K, -361.12 °F) Boiling Point: -183.0 °C (90.15 K, -297.4 °F) Number of Protons/Electrons: 8. Platinum is one of the least reactive metals. The chemical symbol for Yttrium is Y. Yttrium is a silvery-metallic transition metal chemically similar to the lanthanides and has often been classified as a “rare-earth element”. Let's say our pretend atom has electron energy levels of … 48 which means there are 49 protons and 1 electrons in the atomic structure isolated., a group of the stable halogens, being the sixty-first most abundant chemical substance the! And forms a dull coating when oxidized 14 protons and 75 electrons in the structure! Low density, and chlorine Ga. gallium has similarities to the densities of exotic astronomical objects such white. 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