cobalt atomic number
The chemical symbol for Americium is Am. 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. Neptunium metal is silvery and tarnishes when exposed to air. The chemical symbol for Arsenic is As. The chemical symbol for Antimony is Sb. Rhenium is a silvery-white, heavy, third-row transition metal in group 7 of the periodic table. Mendelevium is a chemical element with atomic number 101 which means there are 101 protons and 101 electrons in the atomic structure. Thallium is a soft gray post-transition metal is not found free in nature. Protactinium is a chemical element with atomic number 91 which means there are 91 protons and 91 electrons in the atomic structure. Selenium is a nonmetal with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic. Copyright © 1996-2012 Yinon Bentor. The chemical symbol for Gadolinium is Gd. Manganese is a metal with important industrial metal alloy uses, particularly in stainless steels. The chemical symbol for Erbium is Er. The chemical symbol for Terbium is Tb. Zirconium is widely used as a cladding for nuclear reactor fuels. Significant concentrations of boron occur on the Earth in compounds known as the borate minerals. Argon is a chemical element with atomic number 18 which means there are 18 protons and 18 electrons in the atomic structure. Americium is a transuranic member of the actinide series, in the periodic table located under the lanthanide element europium, and thus by analogy was named after the Americas. Mercury is commonly known as quicksilver and was formerly named hydrargyrum. Titanium is a lustrous transition metal with a silver color, low density, and high strength. Carbon is one of the few elements known since antiquity. The chemical symbol for Helium is He. The chemical symbol for Protactinium is Pa. Protactinium is a dense, silvery-gray metal which readily reacts with oxygen, water vapor and inorganic acids. Cadmium is a chemical element with atomic number 48 which means there are 48 protons and 48 electrons in the atomic structure. 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. cobalt 60: (Co) [ ko´bawlt ] a chemical element, atomic number 27, atomic weight 58.933. Crystal Structure, Element Groups: Samarium is a typical member of the lanthanide series, it is a moderately hard silvery metal that readily oxidizes in air. Technetium is the lightest element whose isotopes are all radioactive; none are stable. The chemical symbol for Aluminum is Al. The densest material found on earth is the metal osmium, but its density pales by comparison to the densities of exotic astronomical objects such as white dwarf stars and neutron stars. Electron Configuration The density of Hassium results from its high atomic weight and from the significant decrease in ionic radii of the elements in the lanthanide series, known as lanthanide and actinide contraction. The information contained in this website is for general information purposes only. Atomic mass of Cobalt is 58.9332 u.. 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 absorption of a neutron converts cobalt-59 to radioactive cobalt-60 (half-life 5.272 years), which decays by the emission of a beta particle and a high-energy gamma ray to nickel-60. Einsteinium is the seventh transuranic element, and an actinide. 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 chemical symbol for Thulium is Tm. 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. 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). Hafnium’s large neutron capture cross-section makes it a good material for neutron absorption in control rods in nuclear power plants, but at the same time requires that it be removed from the neutron-transparent corrosion-resistant zirconium alloys used in nuclear reactors. Lead is a heavy metal that is denser than most common materials. Rubidium is a soft, silvery-white metallic element of the alkali metal group, with an atomic mass of 85.4678. Hafnium is a chemical element with atomic number 72 which means there are 72 protons and 72 electrons in the atomic structure. Osmium is the densest naturally occurring element, with a density of 22.59 g/cm3. About This Site Bromine is the third-lightest halogen, and is a fuming red-brown liquid at room temperature that evaporates readily to form a similarly coloured gas. It rarely occurs in its elemental state or as pure ore compounds in the Earth’s crust. Cobalt (Co) lies with the transition metals on the periodic table. © 2019 periodic-table.org / see also Promethium is one of only two such elements that are followed in the periodic table by elements with stable forms. Europium is one of the least abundant elements in the universe. The chemical symbol for Cobalt is Co. Cobalt is found in the Earth’s crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. Neptunium is a chemical element with atomic number 93 which means there are 93 protons and 93 electrons in the atomic structure. The chemical symbol for Neptunium is Np. Rare Earth Elements, Basic Information | Atomic Structure | Isotopes | Related Links | Citing This Page. Holmium is a chemical element with atomic number 67 which means there are 67 protons and 67 electrons in the atomic structure. Dysprosium is used for its high thermal neutron absorption cross-section in making control rods in nuclear reactors, for its high magnetic susceptibility in data storage applications. For other isotopes, the isotopic mass usually differs and is usually within 0.1 u of the mass number. The total number of neutrons in the nucleus of an atom is called the neutron number of the atom and is given the symbol N. Neutron number plus atomic number equals atomic mass number: N+Z=A. 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. Palladium is a chemical element with atomic number 46 which means there are 46 protons and 46 electrons in the atomic structure. In nuclear reactors, promethium equilibrium exists in power operation. Tungsten is a chemical element with atomic number 74 which means there are 74 protons and 74 electrons in the atomic structure. In fact their absorption cross-sections are the highest among all stable isotopes. Xenon is a colorless, dense, odorless noble gas found in the Earth’s atmosphere in trace amounts. Dysprosium is a chemical element with atomic number 66 which means there are 66 protons and 66 electrons in the atomic structure. Although neodymium is classed as a rare earth, it is a fairly common element. The chemical symbol for Beryllium is Be. 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