The chemical symbol for Selenium is Se. Manganese is a chemical element with atomic number 25 which means there are 25 protons and 25 electrons in the atomic structure. Gold is thought to have been produced in supernova nucleosynthesis, from the collision of neutron stars. Barium is a chemical element with atomic number 56 which means there are 56 protons and 56 electrons in the atomic structure. Gallium does not occur as a free element in nature, but as gallium(III) compounds in trace amounts in zinc ores and in bauxite. Sodium is a soft, silvery-white, highly reactive metal. It is also the most corrosion-resistant metal, even at temperatures as high as 2000 °C. Iodine is a chemical element with atomic number 53 which means there are 53 protons and 53 electrons in the atomic structure. The chemical symbol for Nitrogen is N. Nitrogen is a colourless, odourless unreactive gas that forms about 78% of the earthâs atmosphere. Substantial deviations in atomic weight of the element from that given in the Table can … Terbium is a chemical element with atomic number 65 which means there are 65 protons and 65 electrons in the atomic structure. The chemical symbol for Curium is Cm. The chemical symbol for Tellurium is Te. It is obtained chiefly from the mineral cassiterite, which contains tin dioxide. One atomic mass unit is equal to 1.66 x 10-24 grams. 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. Chromium is a chemical element with atomic number 24 which means there are 24 protons and 24 electrons in the atomic structure. The bulk properties of astatine are not known with any certainty. The chemical symbol for Carbon is C. Mass numbers of typical isotopes of Carbon are 12; 13. Indium is a chemical element with atomic number 49 which means there are 49 protons and 49 electrons in the atomic structure. Cerium is also traditionally considered one of the rare-earth elements. Chemically, indium is similar to gallium and thallium. Each nuclide is denoted by chemical symbol of the element (this specifies Z) with tha atomic mass number as supescript. 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. Praseodymium is a soft, silvery, malleable and ductile metal, valued for its magnetic, electrical, chemical, and optical properties. Under standard conditions, it is the lightest metal and the lightest solid element. The information contained in this website is for general information purposes only. Gold is a transition metal and a group 11 element. It is a noble metal and a member of the platinum group. Iron is a metal in the first transition series. Nitrogen is a chemical element with atomic number 7 which means there are 7 protons and 7 electrons in the atomic structure. Entire website is based on our own personal perspectives, and do not represent the views of any company of nuclear industry. Ytterbium is a chemical element with atomic number 70 which means there are 70 protons and 70 electrons in the atomic structure. Zinc is a chemical element with atomic number 30 which means there are 30 protons and 30 electrons in the atomic structure. The chemical symbol for Ruthenium is Ru. The chemical symbol for Sulfur is S. Sulfur is abundant, multivalent, and nonmetallic. 2) You may not distribute or commercially exploit the content, especially on another website. Rhenium is a silvery-white, heavy, third-row transition metal in group 7 of the periodic table. Its density is about 70% higher than that of lead, and slightly lower than that of gold or tungsten. Plutonium is a chemical element with atomic number 94 which means there are 94 protons and 94 electrons in the atomic structure. Atomic nuclei consist of protons and neutrons, which attract each other through the nuclear force, while protons repel each other via the electric force due to their positive charge. Discoverer: Marinsky, Jacob A. and Coryell, Charles D. and Glendenin, Lawerence. For other isotopes, the isotopic mass usually differs and is usually within 0.1 u of the mass number. Argon is mostly used as an inert shielding gas in welding and other high-temperature industrial processes where ordinarily unreactive substances become reactive; for example, an argon atmosphere is used in graphite electric furnaces to prevent the graphite from burning. Caesium is a soft, silvery-gold alkali metal with a melting point of 28.5 °C, which makes it one of only five elemental metals that are liquid at or near room temperature. The chemical symbol for Bromine is Br. Radon is a radioactive, colorless, odorless, tasteless noble gas. Fermium is a member of the actinide series. In nuclear industry boron is commonly used as a neutron absorber due to the high neutron cross-section of isotope 10B. As the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine. The chemical symbol for Thallium is Tl. The chemical symbol for Zirconium is Zr. Argon is a chemical element with atomic number 18 which means there are 18 protons and 18 electrons in the atomic structure. Krypton is a member of group 18 (noble gases) elements. Significant concentrations of boron occur on the Earth in compounds known as the borate minerals. The atomic mass or relative isotopic mass refers to the mass of a single particle, and therefore is tied to a certain specific isotope of an element. Carbon is one of the few elements known since antiquity. Sulfur is a chemical element with atomic number 16 which means there are 16 protons and 16 electrons in the atomic structure. © 2019 periodic-table.org / see also The chemical symbol for Argon is Ar. They also tell you that hydrogen atoms have 12 times less mass than a carbon atom. Xenon is a colorless, dense, odorless noble gas found in the Earthâs atmosphere in trace amounts.
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