Gadolinium belongs to a rare earth elements (it is one of a set of seventeen chemical elements in the periodic table). The chemical symbol for Nickel is Ni. Zirconium is widely used as a cladding for nuclear reactor fuels. Copper is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. Curium is a hard, dense, silvery metal with a relatively high melting point and boiling point for an actinide. The unit of measure for mass is the atomic mass unit (amu). Plutonium is a chemical element with atomic number 94 which means there are 94 protons and 94 electrons in the atomic structure. The chemical symbol for Thulium is Tm. 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. E. Discoverer: De Marignac, Charles Galissard, Discoverer: De Marignac, Jean Charles Galissard, Discoverer: Göhring, Otto and Fajans, Kasimir. Fermium is a member of the actinide series. Lawrencium is the final member of the actinide series. The chemical symbol for Titanium is Ti. The chemical symbol for Iodine is I. Iodine is the heaviest of the stable halogens, it exists as a lustrous, purple-black metallic solid at standard conditions that sublimes readily to form a violet gas. Krypton is a chemical element with atomic number 36 which means there are 36 protons and 36 electrons in the atomic structure. Platinum is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Elemental rubidium is highly reactive, with properties similar to those of other alkali metals, including rapid oxidation in air. Curium is a chemical element with atomic number 96 which means there are 96 protons and 96 electrons in the atomic structure. Samarium is a typical member of the lanthanide series, it is a moderately hard silvery metal that readily oxidizes in air. Iodine is the least abundant of the stable halogens, being the sixty-first most abundant element. Major advantage of lead shield is in its compactness due to its higher density. These extra neutrons are necessary for stability of the heavier nuclei. The chemical symbol for Fluorine is F. Fluorine is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. Although classified as a rare earth element, samarium is the 40th most abundant element in the Earthâs crust and is more common than such metals as tin. The chemical symbol for Holmium is Ho. Read about our approach to external linking. The chemical symbol for Palladium is Pd. Tantalum is a rare, hard, blue-gray, lustrous transition metal that is highly corrosion-resistant. But its density pales by comparison to the densities of exotic astronomical objects such as white dwarf stars and neutron stars. The atomic mass (ma or m) is the mass of an atom. Fluorine is a chemical element with atomic number 9 which means there are 9 protons and 9 electrons in the atomic structure. By mass, aluminium makes up about 8% of the Earthâs crust; it is the third most abundant element after oxygen and silicon and the most abundant metal in the crust, though it is less common in the mantle below. 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, Copyright 2020 Periodic Table | All Rights Reserved |. Iron is a metal in the first transition series. One atomic mass unit is equal to 1.66 x 10-24 grams. Berkelium is a chemical element with atomic number 97 which means there are 97 protons and 97 electrons in the atomic structure. Tin is a post-transition metal in group 14 of the periodic table. Europium is a moderately hard, silvery metal which readily oxidizes in air and water. The chemical symbol for Californium is Cf. Zirconium is a lustrous, grey-white, strong transition metal that resembles hafnium and, to a lesser extent, titanium. The chemical symbol for Argon is Ar. Uranium is a silvery-white metal in the actinide series of the periodic table. Chemically, indium is similar to gallium and thallium. Europium is one of the least abundant elements in the universe. The chemical symbol for Calcium is Ca. Osmium is a chemical element with atomic number 76 which means there are 76 protons and 76 electrons in the atomic structure. Thus, the numeric value of the atomic mass when expressed in daltons has nearly the same value as the mass number. Manganese is a chemical element with atomic number 25 which means there are 25 protons and 25 electrons in the atomic structure. Silver is a soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. 2) You may not distribute or commercially exploit the content, especially on another website.