Chlorine is a chemical element with atomic number 17 which means there are 17 protons and 17 electrons in the atomic structure. Platinum is used in catalytic converters, laboratory equipment, electrical contacts and electrodes, platinum resistance thermometers, dentistry equipment, and jewelry. Chlorine has an atomic mass of 35,453 u. Nearly all technetium is produced synthetically, and only minute amounts are found in the Earth’s crust. Nickel is a silvery-white lustrous metal with a slight golden tinge. Elemental sulfur is a bright yellow crystalline solid at room temperature. Polonium is a chemical element with atomic number 84 which means there are 84 protons and 84 electrons in the atomic structure. Gold is a transition metal and a group 11 element. Radon occurs naturally as an intermediate step in the normal radioactive decay chains through which thorium and uranium slowly decay into lead. Tellurium is a brittle, mildly toxic, rare, silver-white metalloid. We'll look at its mass spectrum to show the sort of problems involved. Neodymium is not found naturally in metallic form or unmixed with other lanthanides, and it is usually refined for general use. Francium is a highly radioactive metal that decays into astatine, radium, and radon. Also to help understand this concept there is a chart of the nuclides, known as a Segre chart. Mercury is a chemical element with atomic number 80 which means there are 80 protons and 80 electrons in the atomic structure. Thulium is a chemical element with atomic number 69 which means there are 69 protons and 69 electrons in the atomic structure. For 12C the atomic mass is exactly 12u, since the atomic mass unit is defined from it. Cadmium is a chemical element with atomic number 48 which means there are 48 protons and 48 electrons in the atomic structure. It readily forms hard, stable carbides in alloys, and for this reason most of world production of the element (about 80%) is used in steel alloys, including high-strength alloys and superalloys. There are two reasons for the difference between mass number and isotopic mass, known as the mass defect: Typical densities of various substances at atmospheric pressure. What is the difference between the two types of chlorine atom? In nuclear industry boron is commonly used as a neutron absorber due to the high neutron cross-section of isotope 10B. Unstable isotopes decay through various radioactive decay pathways, most commonly alpha decay, beta decay, gamma decay or electron capture. Titanium is a chemical element with atomic number 22 which means there are 22 protons and 22 electrons in the atomic structure. The chemical symbol for Thulium is Tm. This is a list of chemical elements, sorted by atomic mass (or most stable isotope) and color coded according to type of element.Each element's atomic number, name, element symbol, and group and period numbers on the periodic table are given. (Atomic mass of chlorine = 35.5 ) By mass, aluminium makes up about 8% of the Earth’s crust; it is the third most abundant element after oxygen and silicon and the most abundant metal in the crust, though it is less common in the mantle below. Neodymium is a soft silvery metal that tarnishes in air. It is also the most corrosion-resistant metal, even at temperatures as high as 2000 °C. The Standard English unit is pounds mass per cubic foot (lbm/ft3). Mercury is commonly known as quicksilver and was formerly named hydrargyrum. Atomic mass of chlorine is 35.5. The most commonly used spontaneous fission neutron source is the radioactive isotope californium-252. 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