Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics, often known by the Arabic name, kohl. So the first step is to locate the atomic mass on the periodic table, and round the value to the nearest whole number. Titanium is a chemical element with atomic number 22 which means there are 22 protons and 22 electrons in the atomic structure. Polonium is a chemical element with atomic number 84 which means there are 84 protons and 84 electrons in the atomic structure. Of these five are stable, 192 Pt, 194 Pt, 195 Pt, 196 Pt and 198 Pt. The chemical symbol for Xenon is Xe. Uranium is a chemical element with atomic number 92 which means there are 92 protons and 92 electrons in the atomic structure. The chemical symbol for Krypton is Kr. Commercially, thallium is produced as a byproduct from refining of heavy metal sulfide ores. Actinium gave the name to the actinide series, a group of 15 similar elements between actinium and lawrencium in the periodic table. Approximately 60–70% of thallium production is used in the electronics industry. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula S8. The chemical symbol for Radon is Rn. Rhenium is a chemical element with atomic number 75 which means there are 75 protons and 75 electrons in the atomic structure. Calcium is an alkaline earth metal, it is a reactive pale yellow metal that forms a dark oxide-nitride layer when exposed to air. Rhenium is a silvery-white, heavy, third-row transition metal in group 7 of the periodic table. Neptunium is the first transuranic element. Element Platinum (Pt), Group 10, Atomic Number 78, d-block, Mass 195.084. 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. These elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare earth elements. It is the fourth most common element in the Earth’s crust. Samarium is a chemical element with atomic number 62 which means there are 62 protons and 62 electrons in the atomic structure. Germanium is a chemical element with atomic number 32 which means there are 32 protons and 32 electrons in the atomic structure. As the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine. Tin is a post-transition metal in group 14 of the periodic table. Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass. 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. 78 … Platinum does oxidize, forming PtO2, at 500 °C; this oxide can be easily removed thermally. Platinum is the third element of the tenth column in the periodic table. 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. Carbon is the 15th most abundant element in the Earth’s crust, and the fourth most abundant element in the universe by mass after hydrogen, helium, and oxygen. (a) Insufficient iodine in the diet can cause an enlargement of the thyroid gland called a goiter. Chlorine is a yellow-green gas at room temperature. The chemical symbol for Potassium is K. Potassium was first isolated from potash, the ashes of plants, from which its name derives. Platinum-192 isotope is used for research and applications in mass cytometry which is a mass spectrometry technique. Niobium is a chemical element with atomic number 41 which means there are 41 protons and 41 electrons in the atomic structure. Arsenic occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. Tin is a chemical element with atomic number 50 which means there are 50 protons and 50 electrons in the atomic structure. The chemical symbol for Mendelevium is Md. If there are too many or too few neutrons for a given number of protons, the resulting nucleus is not stable and it undergoes radioactive decay. Neodymium is not found naturally in metallic form or unmixed with other lanthanides, and it is usually refined for general use. Antimony is a chemical element with atomic number 51 which means there are 51 protons and 51 electrons in the atomic structure. Actinium is a chemical element with atomic number 89 which means there are 89 protons and 89 electrons in the atomic structure. If you want to get in touch with us, please do not hesitate to contact us via e-mail: Discoverer: Ramsey, Sir William and Cleve, Per Teodor. They produced a platinum and gold alloy that they used in their artwork and jewelry. Check the chart for more details. The chemical symbol for Tellurium is Te. Einsteinium is the seventh transuranic element, and an actinide. Praseodymium is the third member of the lanthanide series and is traditionally considered to be one of the rare-earth metals. 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. Xenon is a colorless, dense, odorless noble gas found in the Earth’s atmosphere in trace amounts. To identify the stability of an isotope it is needed to find the ratio of neutrons to protons. Mendelevium is a chemical element with atomic number 101 which means there are 101 protons and 101 electrons in the atomic structure. Main purpose of this project is to help the public learn some interesting and important information about the peaceful uses of nuclear energy. The chemical symbol for Erbium is Er. 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. Gold is a transition metal and a group 11 element. The chemical symbol for Argon is Ar. The name samarium is after the mineral samarskite from which it was isolated. Copyright 2021 Nuclear Power for Everybody | All Rights Reserved | Powered by, Neodymium – Atomic Number – Atomic Mass – Density of Neodymium, Thallium – Atomic Number – Atomic Mass – Density of Thallium. Discoverer: Marinsky, Jacob A. and Coryell, Charles D. and Glendenin, Lawerence. The chemical symbol for Helium is He. The chemical symbol for Scandium is Sc. Naturally occurring potassium is composed of three isotopes, of which 40K is radioactive. Francium is a highly radioactive metal that decays into astatine, radium, and radon. Its boiling point is the lowest among all the elements. The periodic table is a chart that shows how chemical elements are related to each other. The chemical symbol for Gallium is Ga. Gallium has similarities to the other metals of the group, aluminium, indium, and thallium. The chemical symbol for Zinc is Zn. Neutron number is rarely written explicitly in nuclide symbol notation, but appears as a subscript to the right of the element symbol. Units of measure have been defined for mass and energy on the atomic scale to make measurements more convenient to express. Because the sum of the numbers of protons and neutrons equals the mass number, 127, the number of neutrons is 74 (127 − 53 = 74). In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all … 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 Zirconium is Zr. The chemical symbol for Actinium is Ac. Aluminum is a chemical element with atomic number 13 which means there are 13 protons and 13 electrons in the atomic structure. Oxygen is a chemical element with atomic number 8 which means there are 8 protons and 8 electrons in the atomic structure. The word Platinum is derived from Platina (Spanish word meaning ‘little silver’), because of its grey-white silvery colour. All of its isotopes are radioactive. Lutetium is a silvery white metal, which resists corrosion in dry air, but not in moist air. Niobium is a soft, grey, ductile transition metal, often found in the minerals pyrochlore (the main commercial source for niobium) and columbite. density of platinum is equal to 21 447 kg/m³; at 20°C (68°F or 293.15K) at standard atmospheric pressure. When we use data that are related to certain product, we use only data released by public relations departments and allowed for use. The chemical symbol for Niobium is Nb. Zirconium is widely used as a cladding for nuclear reactor fuels. The chemical symbol for Uranium is U. The chemical symbol for Copper is Cu. Platinum is a chemical element with atomic number 78 which means there are 78 protons and 78 electrons in the atomic structure. Neutrons stabilize the nucleus, because they attract each other and protons , which helps offset the electrical repulsion between protons. Nickel is a silvery-white lustrous metal with a slight golden tinge. Areas covered include atomic structure, physical properties, atomic interaction, thermodynamics, identification, atomic size, crystal structure, history, abundances, and nomenclature. Nobelium is the tenth transuranic element and is the penultimate member of the actinide series. The chemical symbol for Ytterbium is Yb. Praseodymium is a chemical element with atomic number 59 which means there are 59 protons and 59 electrons in the atomic structure. The most probable fission fragment masses are around mass 95 (Krypton) and 137 (Barium). Iodine is the least abundant of the stable halogens, being the sixty-first most abundant element. Aluminium is a silvery-white, soft, nonmagnetic, ductile metal in the boron group. The chemical symbol for Palladium is Pd. Gallium does not occur as a free element in nature, but as gallium(III) compounds in trace amounts in zinc ores and in bauxite. This problem has been solved! Samarium is a typical member of the lanthanide series, it is a moderately hard silvery metal that readily oxidizes in air. Its density is about 70% higher than that of lead, and slightly lower than that of gold or tungsten. Like the other metals of the platinum group, ruthenium is inert to most other chemicals. Hydrogen is a chemical element with atomic number 1 which means there are 1 protons and 1 electrons in the atomic structure. Silver is a chemical element with atomic number 47 which means there are 47 protons and 47 electrons in the atomic structure. 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.

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