Cobalt is found in the Earth’s crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. The chemical symbol for Mercury is Hg. The chemical symbol for Nitrogen is N. Nitrogen is a colourless, odourless unreactive gas that forms about 78% of the earth’s atmosphere. Classified as a transition metal, Cobalt is a solid at room temperature. Francium is an alkali metal, that has one valence electron. By mass, oxygen is the third-most abundant element in the universe, after hydrogen and helium. Aluminium is a silvery-white, soft, nonmagnetic, ductile metal in the boron group. Mass numbers of typical isotopes of Cobalt are 59. 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 Cadmium is Cd. All of the alkali metals have a single valence electron in the outer electron shell, which is easily removed to create an ion with a positive charge – a cation, which combines with anions to form salts. Actinium is a chemical element with atomic number 89 which means there are 89 protons and 89 electrons in the atomic structure. Nearly all technetium is produced synthetically, and only minute amounts are found in the Earth’s crust. The chemical symbol for Calcium is Ca. From the German word Kobald, goblin or evil spirit; also from the Greek cobalos, mine. Hydrogen (H, atomic number 1) has two stable isotopes: hydrogen-1 … The various species of atoms whose nuclei contain particular numbers of protons and neutrons are called nuclides. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. The chemical symbol for Bromine is Br. Lawrencium is a chemical element with atomic number 103 which means there are 103 protons and 103 electrons in the atomic structure. Our Privacy Policy is a legal statement that explains what kind of information about you we collect, when you visit our Website. Cadmium is a chemical element with atomic number 48 which means there are 48 protons and 48 electrons in the atomic structure. Mendelevium is a chemical element with atomic number 101 which means there are 101 protons and 101 electrons in the atomic structure. Since the density (ρ) of a substance is the total mass (m) of that substance divided by the total volume (V) occupied by that substance, it is obvious, the density of a substance strongly depends on its atomic mass and also on the atomic number density (N; atoms/cm3). Elemental sulfur is a bright yellow crystalline solid at room temperature. Discoverer: Corson, Dale R. and Mackenzie, K. R. The actinide or actinoid series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium. In nuclear reactors, promethium equilibrium exists in power operation. Titanium condenser tubes are usually the best technical choice, however titanium is very expensive material. Holmium is a chemical element with atomic number 67 which means there are 67 protons and 67 electrons in the atomic structure. Under standard conditions, it is the lightest metal and the lightest solid element. Element Cobalt (Co), Group 9, Atomic Number 27, d-block, Mass 58.933. The chemical symbol for Thorium is Th. © 2019 periodic-table.org / see also All of its isotopes are radioactive. The chemical symbol for Titanium is Ti. Its density is about 70% higher than that of lead, and slightly lower than that of gold or tungsten. Chlorine is a chemical element with atomic number 17 which means there are 17 protons and 17 electrons in the atomic structure. Nuclides that have the same neutron number but a different proton number are called isotones. The chemical symbol for Nickel is Ni. Our cobalt page has over 250 facts that span 106 different quantities. Thorium metal is silvery and tarnishes black when exposed to air, forming the dioxide. Zirconium is widely used as a cladding for nuclear reactor fuels. The Cookies Statement is part of our Privacy Policy. Beryllium is a hard, grayish metal naturally found in mineral rocks, coal, soil, and volcanic dust. Elemental rubidium is highly reactive, with properties similar to those of other alkali metals, including rapid oxidation in air. The chemical symbol for Tungsten is W. Tungsten is a rare metal found naturally on Earth almost exclusively in chemical compounds. Promethium is a chemical element with atomic number 61 which means there are 61 protons and 61 electrons in the atomic structure. 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. Since nucleons (protons and neutrons) make up most of the mass of ordinary atoms, the density of normal matter tends to be limited by how closely we can pack these nucleons and depends on the internal atomic structure of a substance. Chlorine is a yellow-green gas at room temperature. Although classified as a rare earth element, samarium is the 40th most abundant element in the Earth’s crust and is more common than such metals as tin. Rhodium is a rare, silvery-white, hard, corrosion resistant and chemically inert transition metal. Magnesium is a chemical element with atomic number 12 which means there are 12 protons and 12 electrons in the atomic structure. 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. Cobalt-60, a radioactive isotope of cobalt, is an important source of gamma rays and is used to treat some forms of cancer and as a medical tracer. Our Website follows all legal requirements to protect your privacy. The atomic mass of this element is 58.93 amu while the atomic mass of titanium is 47.86 amu. Scandium is a silvery-white metallic d-block element, it has historically been sometimes classified as a rare-earth element, together with yttrium and the lanthanides. Pure germanium is a semiconductor with an appearance similar to elemental silicon. In nuclear industry cadmium is commonly used as a thermal neutron absorber due to very high neutron absorption cross-section of 113Cd. It is even less abundant than the so-called rare earths. Cobalt is a chemical element with atomic number 27 which means there are 27 protons and 27 electrons in the atomic structure.The chemical symbol for Cobalt is Co. Atomic Mass of Cobalt. A colorless, odorless, tasteless noble gas, krypton occurs in trace amounts in the atmosphere and is often used with other rare gases in fluorescent lamps. Sodium is a chemical element with atomic number 11 which means there are 11 protons and 11 electrons in the atomic structure. Liquid nitrogen (made by distilling liquid air) boils at 77.4 kelvins (−195.8°C) and is used as a coolant. Discoverer: Davy, Sir H. and Thénard, L.-J. The chemical symbol for Ytterbium is Yb. It is an extremely reactive element and a strong oxidising agent: among the elements, it has the highest electron affinity and the third-highest electronegativity, behind only oxygen and fluorine. Cobalt (Co). Rubidium is a soft, silvery-white metallic element of the alkali metal group, with an atomic mass of 85.4678. Entire website is based on our own personal perspectives, and do not represent the views of any company of nuclear industry. Areas covered include atomic structure, physical properties, atomic interaction, thermodynamics, identification, atomic size, crystal structure, history, abundances, and nomenclature. Iridium is a chemical element with atomic number 77 which means there are 77 protons and 77 electrons in the atomic structure. Krypton is a chemical element with atomic number 36 which means there are 36 protons and 36 electrons in the atomic structure. It is present in the sun, in soil, and in bodies of plants and animals. 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). Name Discoverer: Coster, Dirk and De Hevesy, George Charles, Discoverer: Elhuyar, Juan José and Elhuyar, Fausto, Discoverer: Noddack, Walter and Berg, Otto Carl and Tacke, Ida. The atomic mass is the mass of an atom. Caesium has physical and chemical properties similar to those of rubidium and potassium. Despite its high price and rarity, thulium is used as the radiation source in portable X-ray devices. Chromium is a chemical element with atomic number 24 which means there are 24 protons and 24 electrons in the atomic structure. It is used in many places today, such as, magnets materials, paint pigments, glasses, and even cancer therapy. 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 |. Very soft and malleable, indium has a melting point higher than sodium and gallium, but lower than lithium and tin. Strontium is a chemical element with atomic number 38 which means there are 38 protons and 38 electrons in the atomic structure. The chemical symbol for Antimony is Sb. See also: Atomic Mass Number – Does it conserve in a nuclear reaction? Hafnium is a chemical element with atomic number 72 which means there are 72 protons and 72 electrons in the atomic structure. Lanthanum is a chemical element with atomic number 57 which means there are 57 protons and 57 electrons in the atomic structure. Europium is a moderately hard, silvery metal which readily oxidizes in air and water. The chemical symbol for Tin is Sn. The chemical symbol for Lanthanum is La. 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. Francium is the second-least electronegative element, behind only caesium, and is the second rarest naturally occurring element (after astatine). The chemical symbol for Americium is Am. Holmium is a part of the lanthanide series, holmium is a rare-earth element. Radon occurs naturally as an intermediate step in the normal radioactive decay chains through which thorium and uranium slowly decay into lead. Titanium is a lustrous transition metal with a silver color, low density, and high strength. It is one of the least reactive chemical elements and is solid under standard conditions. The chemical symbol for Astatine is At. Fermium is a member of the actinide series. 2) You may not distribute or commercially exploit the content, especially on another website. As the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine. Silver is a soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. 113Cd has specific absorption cross-section. These have similar chemical properties, but palladium has the lowest melting point and is the least dense of them. www.nuclear-power.net. Francium is a chemical element with atomic number 87 which means there are 87 protons and 87 electrons in the atomic structure. Lawrencium is the final member of the actinide series. Other Metals Its extreme rarity in the Earth’s crust, comparable to that of platinum. It is a bluish-white, hard, lustrous and brittle metal. Antimony is a lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite. Bismuth is a pentavalent post-transition metal and one of the pnictogens, chemically resembles its lighter homologs arsenic and antimony. Zirconium is a chemical element with atomic number 40 which means there are 40 protons and 40 electrons in the atomic structure. We use cookies to ensure that we give you the best experience on our website. Sodium is an alkali metal, being in group 1 of the periodic table, because it has a single electron in its outer shell that it readily donates, creating a positively charged atom—the Na+ cation. Atomic Number of Cobalt. Fermium is a chemical element with atomic number 100 which means there are 100 protons and 100 electrons in the atomic structure. [page needed] These are all transition metals in the d-block. The chemical symbol for Gadolinium is Gd. The chemical symbol for Samarium is Sm. Cobalt salts are used to impart blue and green colors in glass and ceramics. Hafnium is a lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in many zirconium minerals. The chemical symbol for Boron is B. It is an intensive property, which is mathematically defined as mass divided by volume: In words, the density (ρ) of a substance is the total mass (m) of that substance divided by the total volume (V) occupied by that substance. 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. The Standard English unit is pounds mass per cubic foot (lbm/ft3). It is the fifth most abundant element in Earth’s crust and the third most abundant metal, after iron and aluminium. The chemical symbol for Magnesium is Mg. Magnesium is a shiny gray solid which bears a close physical resemblance to the other five elements in the second column (group 2, or alkaline earth metals) of the periodic table: all group 2 elements have the same electron configuration in the outer electron shell and a similar crystal structure. Polonium is a chemical element with atomic number 84 which means there are 84 protons and 84 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. Gadolinium is a chemical element with atomic number 64 which means there are 64 protons and 64 electrons in the atomic structure. Each nuclide is denoted by chemical symbol of the element (this specifies Z) with tha atomic mass number as supescript. Silver is a chemical element with atomic number 47 which means there are 47 protons and 47 electrons in the atomic structure. Cobalt (Co) lies with the transition metals on the periodic table. Cobalt is a chemical element with symbol Co and atomic number 27. The nucleus consists of 27 protons (red) and 32 neutrons (blue). 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 Francium is Fr. Cobalt (Co) is a bluish-white metal that has the atomic number 27 in the periodic table. The chemical properties of this silvery gray, crystalline transition metal are intermediate between rhenium and manganese. Hydrogen is a chemical element with atomic number 1 which means there are 1 protons and 1 electrons in the atomic structure. agreement. Neutron number is rarely written explicitly in nuclide symbol notation, but appears as a subscript to the right of the element symbol. Cerium is the second element in the lanthanide series. For example, 63Cu (29 protons and 34 neutrons) has a mass number of 63 and an isotopic mass in its nuclear ground state is 62.91367 u. Einsteinium is a chemical element with atomic number 99 which means there are 99 protons and 99 electrons in the atomic structure. Only about 5×10−8% of all matter in the universe is europium. The chemical symbol for Iridium is Ir. Francium is a highly radioactive metal that decays into astatine, radium, and radon. Notes on the properties of Cobalt: Specific Heat: Value given for solid phase. Einsteinium is the seventh transuranic element, and an actinide. The ninth member of the lanthanide series, terbium is a fairly electropositive metal that reacts with water, evolving hydrogen gas. Tungsten is an intrinsically brittle and hard material, making it difficult to work. Cobalt is found in the Earth’s crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. 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. The most probable fission fragment masses are around mass 95 (Krypton) and 137 (Barium). Most common minerals of cobalt are cobaltite (cobalt sulfoarsenide mineral), linnaeite (… Be cut with a metallic silver luster each entry has a tremendous impact on operation. Denser than most common materials: Davy, Sir H. and Thénard, L.-J,! Berkelium is a chemical element with atomic number 23 which means there are 42 protons and electrons... Is weakly radioactive because all isotopes of radium are highly radioactive metal that hafnium. 1 protons and 71 electrons in the atomic structure means there are protons. Fermium is a chemical element, originally found in the atomic structure usually assumes the oxidation state.... 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