Main purpose of this project is to help the public learn some interesting and important information about chemical elements, ionizing radiation, thermal engineering, reactor physics and nuclear energy. Tantalum is a chemical element with atomic number 73 which means there are 73 protons and 73 electrons in the atomic structure. Sir Humphry Davy, Guy Lussac and another scientist named Theonard gave boron its name. Under standard conditions, it is the lightest metal and the lightest solid element. al. It is obtained chiefly from the mineral cassiterite, which contains tin dioxide. This pentahydrate is used in very large quantities in the manufacture of insulation fiberglass and sodium perborate bleach. Both of these ores are found in the Mojave Desert. Boron, number 5 on the periodic table, is a metalloid, meaning it has properties of a metal and a non-metal. Boron is a chemical element with atomic number 5 which means there are 5 protons and 5 electrons in the atomic structure.The chemical symbol for Boron is B. It is a noble metal and a member of the platinum group. Niobium is a chemical element with atomic number 41 which means there are 41 protons and 41 electrons in the atomic structure. The chemical symbol for Manganese is Mn. Gadolinium belongs to a rare earth elements (it is one of a set of seventeen chemical elements in the periodic table). 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. These have similar chemical properties, but palladium has the lowest melting point and is the least dense of them. Osmium is a hard, brittle, bluish-white transition metal in the platinum group that is found as a trace element in alloys, mostly in platinum ores. Zirconium is mainly used as a refractory and opacifier, although small amounts are used as an alloying agent for its strong resistance to corrosion. Erbium is a silvery-white solid metal when artificially isolated, natural erbium is always found in chemical combination with other elements. Tincal is the most important source of boron from the Mojave. The chemical symbol for Rhenium is Re. The chemical symbol for Berkelium is Bk. Atomic Number â Does it conserve in a nuclear reaction? 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). Francium is an alkali metal, that has one valence electron. (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. Einsteinium is the seventh transuranic element, and an actinide. Holmium is a relatively soft and malleable silvery-white metal. Uranium is weakly radioactive because all isotopes of uranium are unstable, with half-lives varying between 159,200 years and 4.5 billion years. The chemical symbol for Tellurium is Te. Mendelevium is a chemical element with atomic number 101 which means there are 101 protons and 101 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. The chemical symbol for Xenon is Xe. Bismuth is a pentavalent post-transition metal and one of the pnictogens, chemically resembles its lighter homologs arsenic and antimony. Fermium is a chemical element with atomic number 100 which means there are 100 protons and 100 electrons in the atomic structure. Praseodymium is a soft, silvery, malleable and ductile metal, valued for its magnetic, electrical, chemical, and optical properties. Indium is a post-transition metal that makes up 0.21 parts per million of the Earthâs crust. It is one of the least reactive chemical elements and is solid under standard conditions. Like all elements with atomic number over 100, lawrencium can only be produced in particle accelerators by bombarding lighter elements with charged particles. Krypton is a member of group 18 (noble gases) elements. Neptunium metal is silvery and tarnishes when exposed to air. All isotopes of radium are highly radioactive, with the most stable isotope being radium-226. Sodium is a chemical element with atomic number 11 which means there are 11 protons and 11 electrons in the atomic structure. The element is not found free in nature, but occurs as orthoboric acid usually found in certain volcanic spring waters and as borates in boron and colemantie. Commercially, thallium is produced as a byproduct from refining of heavy metal sulfide ores. Boron, symbol B, has a Simple Trigonal structure and Black color. The chemical symbol for Rubidium is Rb. Nickel belongs to the transition metals and is hard and ductile. Elemental sulfur is a bright yellow crystalline solid at room temperature. Aluminum is a chemical element with atomic number 13 which means there are 13 protons and 13 electrons in the atomic structure. In nuclear industry, especially artificial xenon 135 has a tremendous impact on the operation of a nuclear reactor. The chemical symbol for Lawrencium is Lr. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal. The chemical symbol for Radium is Ra. In some respects zinc is chemically similar to magnesium: both elements exhibit only one normal oxidation state (+2), and the Zn2+ and Mg2+ ions are of similar size. Radon is a chemical element with atomic number 86 which means there are 86 protons and 86 electrons in the atomic structure. The chemical symbol for Bismuth is Bi. Lead is widely used as a gamma shield. Lutetium is the last element in the lanthanide series, and it is traditionally counted among the rare earths. Boron is a poor conductor of electricity at room temperature but a good conductor at high temperature. Other boron compounds show promise in treating arthritis. The chemical symbol for Zirconium is Zr. The number of electrons in each elementâs electron shells, particularly the outermost valence shell, is the primary factor in determining its chemical bonding behavior. Boron is a metalloid element. Promethium is one of only two such elements that are followed in the periodic table by elements with stable forms. Boron (B), chemical element, semimetal of main Group 13 (IIIa, or boron group) of the periodic table, essential to plant growth and of wide industrial application. The chemical symbol for Technetium is Tc. It's the big number five on the periodic table of elements. Chemically, sulfur reacts with all elements except for gold, platinum, iridium, tellurium, and the noble gases.