52. The chemical symbol for Neon is Ne. The element and its compounds make up 49.2%, by weight, of the earth's crust. It is the eponym of the lanthanide series, a group of 15 similar elements between lanthanum and lutetium in the periodic table, of which lanthanum is the first and the prototype. Aluminium is a silvery-white, soft, nonmagnetic, ductile metal in the boron group. Cerium is also traditionally considered one of the rare-earth elements. It is a soft, silvery-white alkali metal. 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. If part of the compound is in parentheses, multiply the subscript immediately following the element symbol by the subscript that closes the parentheses. al. The chemical symbol for Niobium is Nb. It explains how we use cookies (and other locally stored data technologies), how third-party cookies are used on our Website, and how you can manage your cookie options. Significant concentrations of boron occur on the Earth in compounds known as the borate minerals. In nuclear reactors, promethium equilibrium exists in power operation. 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. Hydrogen is a chemical element with atomic number 1 which means there are 1 protons and 1 electrons in the atomic structure. (1 u is equal to 1/12 the mass of one atom of carbon-12) Thorium is a chemical element with atomic number 90 which means there are 90 protons and 90 electrons in the atomic structure. The chemical symbol for Radium is Ra. Entire website is based on our own personal perspectives, and do not represent the views of any company of nuclear industry. ›› Oxygen molecular weight. Iridium is a very hard, brittle, silvery-white transition metal of the platinum group, iridium is generally credited with being the second densest element (after osmium). 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. Tellurium is a brittle, mildly toxic, rare, silver-white metalloid. Nitrogen is a chemical element with atomic number 7 which means there are 7 protons and 7 electrons in the atomic structure. Like all elements with atomic number over 100, lawrencium can only be produced in particle accelerators by bombarding lighter elements with charged particles. Lead is widely used as a gamma shield. In nuclear industry, especially artificial xenon 135 has a tremendous impact on the operation of a nuclear reactor. Uranium has the highest atomic weight of the primordially occurring elements. The element X (atomic weight = 75) and Y (atomic weight = 16) combine to give a compound containing 75.8% X. The chemical symbol for Krypton is Kr. 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). Naturally occurring potassium is composed of three isotopes, of which 40K is radioactive. When Ferrous sulphate acts as reductant, its equivalent weight is 1) Twice that of its molecular weight 2) Equal to its molecular weight 3) One-half of its molecular weight 4) One-third of its molecular weight 53. Holmium is a relatively soft and malleable silvery-white metal. the formula entry box: © 2018 by the U.S. Secretary of Commerce The chemical symbol for Lanthanum is La. Gallium does not occur as a free element in nature, but as gallium(III) compounds in trace amounts in zinc ores and in bauxite. These weights may vary significantly from molecular It is by mass the most common element on Earth, forming much of Earth’s outer and inner core. 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. 2:08 6.0k LIKES. The chemical symbol for Berkelium is Bk. Bromine is a chemical element with atomic number 35 which means there are 35 protons and 35 electrons in the atomic structure. The chemical symbol for Europium is Eu. Since both of these elements are diatomic in air - O 2 and N 2, the molar mass of oxygen gas is aprox. Can J Anaesth. Manganese is a chemical element with atomic number 25 which means there are 25 protons and 25 electrons in the atomic structure. The chemical symbol for Calcium is Ca. Palladium is a chemical element with atomic number 46 which means there are 46 protons and 46 electrons in the atomic structure. The chemical symbol for Holmium is Ho. The chemical symbol for Hafnium is Hf. If one or more of the data types are checked, Cerium is a chemical element with atomic number 58 which means there are 58 protons and 58 electrons in the atomic structure. The chemical symbol for Lead is Pb. Tellurium is far more common in the universe as a whole than on Earth. Molecular weight calculation: 15.9994*2 ›› Percent composition by element Specific Weight is defined as weight per unit volume. Arsenic occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. Note that, each element may contain more isotopes, therefore this resulting atomic mass is calculated from naturally-occuring isotopes and their abundance. 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. The atomic weight of elements is a relative figure, with one atom of the carbon-12 isotope being assigned the atomic weight of 12; the atomic weight of hydrogen is then approximately 1, of oxygen approximately 16, and the molecular weight of water (H 2 O) 18. Ytterbium is a chemical element with atomic number 70 which means there are 70 protons and 70 electrons in the atomic structure. Bismuth is a chemical element with atomic number 83 which means there are 83 protons and 83 electrons in the atomic structure. Because of its high chemical reactivity, barium is never found in nature as a free element. The molecular weight of oxygen is 32. Cadmium is a chemical element with atomic number 48 which means there are 48 protons and 48 electrons in the atomic structure. The commercial use of beryllium requires the use of appropriate dust control equipment and industrial controls at all times because of the toxicity of inhaled beryllium-containing dusts that can cause a chronic life-threatening allergic disease in some people called berylliosis. on behalf of the United States of America. Definitions of molecular mass, molecular weight, molar mass and molar weight. Molecular oxygen is essential for life, as it is used for respiration by many organisms. Fermium is a member of the actinide series. Convert grams Oxygen to moles or moles Oxygen to grams ›› Percent composition by element The chemical symbol for Curium is Cm. Cerium is the second element in the lanthanide series. Typical densities of various substances are at atmospheric pressure. Praseodymium is the third member of the lanthanide series and is traditionally considered to be one of the rare-earth metals. Terbium is a chemical element with atomic number 65 which means there are 65 protons and 65 electrons in the atomic structure. Ozone ozone , an allotropic form of the chemical element oxygen (see allotropy). Chlorine is a yellow-green gas at room temperature. 113Cd has specific absorption cross-section. Major advantage of lead shield is in its compactness due to its higher density. Thorium metal is silvery and tarnishes black when exposed to air, forming the dioxide. Berkelium is a member of the actinide and transuranium element series. Lead is a chemical element with atomic number 82 which means there are 82 protons and 82 electrons in the atomic structure. Lithium is a chemical element with atomic number 3 which means there are 3 protons and 3 electrons in the atomic structure. Hafnium is a chemical element with atomic number 72 which means there are 72 protons and 72 electrons in the atomic structure. Oxygen-15 atom is the radioactive isotope of oxygen with relative atomic mass 15.003065. Nickel belongs to the transition metals and is hard and ductile. The chemical symbol for Dysprosium is Dy. Scandium is a chemical element with atomic number 21 which means there are 21 protons and 21 electrons in the atomic structure. Rhenium is a silvery-white, heavy, third-row transition metal in group 7 of the periodic table. The chemical symbol for Lutetium is Lu. The chemical symbol for Mendelevium is Md. Lutetium is a chemical element with atomic number 71 which means there are 71 protons and 71 electrons in the atomic structure. For other isotopes, the isotopic mass usually differs and is usually within 0.1 u of the mass number. The chemical symbol for Nobelium is No. All of its isotopes are radioactive. 10.4k VIEWS. 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. The chemical symbol for Indium is In. The chemical symbol for Actinium is Ac. The chemical symbol for Rhodium is Rh. 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. The chemical symbol for Strontium is Sr. Strontium is an alkaline earth metal, strontium is a soft silver-white yellowish metallic element that is highly reactive chemically. Actinium is a soft, silvery-white radioactive metal. It is the heaviest element that can be formed by neutron bombardment of lighter elements, and hence the last element that can be prepared in macroscopic quantities. (1 u is equal to 1/12 the mass of one atom of carbon-12) If none of the data types are checked, there Bismuth is a brittle metal with a silvery white color when freshly produced, but surface oxidation can give it a pink tinge. E. Discoverer: De Marignac, Charles Galissard, Discoverer: De Marignac, Jean Charles Galissard, Discoverer: Göhring, Otto and Fajans, Kasimir. The chemical symbol for Rhenium is Re. In fact their absorption cross-sections are the highest among all stable isotopes. 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 Tungsten is W. Tungsten is a rare metal found naturally on Earth almost exclusively in chemical compounds. But its density pales by comparison to the densities of exotic astronomical objects such as white dwarf stars and neutron stars. 1) You may use almost everything for non-commercial and educational use. Uranium is a silvery-white metal in the actinide series of the periodic table. Silicon is a chemical element with atomic number 14 which means there are 14 protons and 14 electrons in the atomic structure. The limits of the range should Chemically, sulfur reacts with all elements except for gold, platinum, iridium, tellurium, and the noble gases. The limits of the range should be separated by a comma. Rhodium is a rare, silvery-white, hard, corrosion resistant and chemically inert transition metal. Density is defined as the mass per unit volume. 4.6k VIEWS. Niobium is a soft, grey, ductile transition metal, often found in the minerals pyrochlore (the main commercial source for niobium) and columbite. Ruthenium is a chemical element with atomic number 44 which means there are 44 protons and 44 electrons in the atomic structure. 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. The chemical symbol for Helium is He. Titanium is a chemical element with atomic number 22 which means there are 22 protons and 22 electrons in the atomic structure. Commercially, thallium is produced as a byproduct from refining of heavy metal sulfide ores. Although neodymium is classed as a rare earth, it is a fairly common element. Oxygen has a molar mass of 15.9994 g/mol and nitrogen has a molar mass of 14.0067 g/mol. Pure germanium is a semiconductor with an appearance similar to elemental silicon. Oxygen is a chemical element with symbol O and atomic number 8. Neptunium is the first transuranic element. The chemical symbol for Gallium is Ga. Gallium has similarities to the other metals of the group, aluminium, indium, and thallium. When you look up the atomic weight of oxygen, you find it is 16.00 g. Therefore, the molar mass of oxygen is: Biosynthesis of high molecular weight hyaluronic acid by Streptococcus zooepidemicus using oxygen vector and optimum impeller tip speed. It is equal to the molar mass, given by the equation. These elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare earth elements. The weight of larger molecules and macromolecules (e.g., DNA, proteins) is found using light scattering and viscosity. Platinum is used in catalytic converters, laboratory equipment, electrical contacts and electrodes, platinum resistance thermometers, dentistry equipment, and jewelry. The chemical symbol for Platinum is Pt. formula is interpreted is controlled by two checkboxes below The chemical symbol for Aluminum is Al. Helium is a chemical element with atomic number 2 which means there are 2 protons and 2 electrons in the atomic structure. 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. It is the heaviest essential mineral nutrient. Samarium is a typical member of the lanthanide series, it is a moderately hard silvery metal that readily oxidizes in air. Convert grams O2 to moles or moles O2 to grams. 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. Lawrencium is the final member of the actinide series. In his work Pneumatica, Philo observed that inverting a vessel over a burning candle and surrounding the vessel's neck with water resulted in some water rising into the neck. Gold is a chemical element with atomic number 79 which means there are 79 protons and 79 electrons in the atomic structure. 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. Oxygen was discovered by Carl Wilhelm Scheele, in Uppsala, in 1773. The chemical symbol for Arsenic is As. 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