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The chemical symbol for Potassium is K. Potassium was first isolated from potash, the ashes of plants, from which its name derives. Thulium is an easily workable metal with a bright silvery-gray luster. 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. The chemical symbol for Cerium is Ce. Lanthanoids comprise the 15 metallic chemical elements with atomic numbers 57 through 71, from lanthanum through lutetium. The chemical symbol for Silver is Ag. The chemical symbol for Nitrogen is N. Nitrogen is a colourless, odourless unreactive gas that forms about 78% of the earthâs atmosphere. 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 Yttrium is Y. Yttrium is a silvery-metallic transition metal chemically similar to the lanthanides and has often been classified as a ârare-earth elementâ. The chemical symbol for Selenium is Se. It is a member of the chalcogen group on the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds. It is a dense substance, with an average density of 7.14 g/cm^3. The chemical symbol for Antimony is Sb. The chemical symbol for Rhodium is Rh. Hafniumâs 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. Atomic Mass of Zinc. 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. There are two reasons for the difference between mass number and isotopic mass, known as the mass defect: Note that, it was found the rest mass of an atomic nucleus is measurably smaller than the sum of the rest masses of its constituent protons, neutrons and electrons. Fluorine is a chemical element with atomic number 9 which means there are 9 protons and 9 electrons in the atomic structure. Its physical and chemical properties are most similar to its heavier homologues strontium and barium. Chemically, sulfur reacts with all elements except for gold, platinum, iridium, tellurium, and the noble gases. The ninth member of the lanthanide series, terbium is a fairly electropositive metal that reacts with water, evolving hydrogen gas. The chemical symbol for Helium is He. 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. Gold is thought to have been produced in supernova nucleosynthesis, from the collision of neutron stars. A major development was the discovery that steel could be made highly resistant to corrosion and discoloration by adding metallic chromium to form stainless steel. The chemical symbol for Zinc is Zn. Tellurium is far more common in the universe as a whole than on Earth. Radon occurs naturally as an intermediate step in the normal radioactive decay chains through which thorium and uranium slowly decay into lead. Neodymium is not found naturally in metallic form or unmixed with other lanthanides, and it is usually refined for general use. The chemical symbol for Francium is Fr. Niobium is a soft, grey, ductile transition metal, often found in the minerals pyrochlore (the main commercial source for niobium) and columbite. The first alloy used on a large scale was bronze, made of tin and copper, from as early as 3000 BC. Discoverer: Davy, Sir H. and Thénard, L.-J. Physical and chemical properties of zinc:Physical properties of zincZinc metal is lustrousZinc is a bluish white metal.It is lustrous but the commercially available zinc is dull.It is a diamagnetic metal.Zinc's density is slightly lesser than that of iron.Zinc metal has a hexagonal crystal structure.Zinc is known to be hard and brittle.Although at temperatures between 100 and 150 degrees celsius, it becomes malleable.At temperatures higher than 210 degrees celsius, the metal becomes brittle. 113Cd has specific absorption cross-section. Thorium is a naturally-occurring element and it is estimated to be about three times more abundant than uranium. 2) You may not distribute or commercially exploit the content, especially on another website. The chemical symbol for Actinium is Ac. Zinc is a chemical element with atomic number 30 which means there are 30 protons and 30 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. Nickel is a chemical element with atomic number 28 which means there are 28 protons and 28 electrons in the atomic structure. Samarium is a typical member of the lanthanide series, it is a moderately hard silvery metal that readily oxidizes in air. One unified atomic mass unit is approximately the mass of one nucleon (either a single proton or neutron) and is numerically equivalent to 1 g/mol. 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). Because of this, it loses 2 electrons to form a positively charged ion. Cerium is the second element in the lanthanide series.
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