Yes you guessed it, it as rhenium! Atomic Number – Does it conserve in a nuclear reaction? But in 1964 Albert Cotton and co-workers in the USA discovered the existence of a metal-metal quadruple bond. Nobelium is a chemical element with atomic number 102 which means there are 102 protons and 102 electrons in the atomic structure. The chemical symbol for Manganese is Mn. The Cookies Statement is part of our Privacy Policy. See also: Atomic Mass Number – Does it conserve in a nuclear reaction? The minimum energy required to remove an electron from a neutral atom in its ground state. The chemical symbol for Chlorine is Cl. Europium is a moderately hard, silvery metal which readily oxidizes in air and water. Promethium is one of only two such elements that are followed in the periodic table by elements with stable forms. The higher the value, the larger risk there is to supply. Like all alkali metals, lithium is highly reactive and flammable, and is stored in mineral oil. Rubidium is a soft, silvery-white metallic element of the alkali metal group, with an atomic mass of 85.4678. Actinium gave the name to the actinide series, a group of 15 similar elements between actinium and lawrencium in the periodic table. The chemical symbol for Selenium is Se. One unified atomic mass unit is approximatelythe mass of one nucleon (either a single proton or neutron) and is numerically equivalent to 1 g/mol. The chemical symbol for Chromium is Cr. is a rare earth element with a metallic silver luster. Chromium is a steely-grey, lustrous, hard and brittle metal4 which takes a high polish, resists tarnishing, and has a high melting point. Tellurium is far more common in the universe as a whole than on Earth. A measure of how difficult it is to deform a material. Members of a group typically have similar properties and electron configurations in their outer shell. Covalent radiusHalf of the distance between two atoms within a single covalent bond. and Gay-Lussac, L.-J. [64] InAs and InSb are used for low-temperature transistors and InP for high-temperature transistors. Please enable JavaScript to access the full features of the site. The temperature at which the solid–liquid phase change occurs. The chemical symbol for Molybdenum is Mo. Thorium is commonly found in monazite sands (rare earth metals containing phosphate mineral). Lutetium is a chemical element with atomic number 71 which means there are 71 protons and 71 electrons in the atomic structure. Note that, electrical resistivity is not the same as electrical resistance. Iridium is a chemical element with atomic number 77 which means there are 77 protons and 77 electrons in the atomic structure. 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. Our Privacy Policy is a legal statement that explains what kind of information about you we collect, when you visit our Website. A horizontal row in the periodic table. The oxidation state of an atom is a measure of the degree of oxidation of an atom. Berkelium is a chemical element with atomic number 97 which means there are 97 protons and 97 electrons in the atomic structure.    Atomic Mass Sodium is a chemical element with atomic number 11 which means there are 11 protons and 11 electrons in the atomic structure. 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. Krypton is a member of group 18 (noble gases) elements. [16] Indium(I) oxide and hydroxide are more basic and indium(III) oxide and hydroxide are more acidic. Chromium is a steely-grey, lustrous, hard and brittle metal4 which takes a high polish, resists tarnishing, and has a high melting point. The chemical symbol for Erbium is Er. Bismuth is a chemical element with atomic number 83 which means there are 83 protons and 83 electrons in the atomic structure. technology and price). Nobelium is the tenth transuranic element and is the penultimate member of the actinide series. Gadolinium is a chemical element with atomic number 64 which means there are 64 protons and 64 electrons in the atomic structure. Niobium is a soft, grey, ductile transition metal, often found in the minerals pyrochlore (the main commercial source for niobium) and columbite. The chemical symbol for Niobium is Nb. Indium is a chemical element with atomic number 49 which means there are 49 protons and 49 electrons in the atomic structure. The chemical symbol for Terbium is Tb. 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”.