An element that is not combined with any other different elements has an oxidation state of 0. This page was created by Yinon Bentor. Copyright © 2020 Multiply Media, LLC. The chemical symbol for Samarium is Sm.

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. X + e– → X– + energy        Affinity = – ∆H. Commercially, thallium is produced as a byproduct from refining of heavy metal sulfide ores. Iodine is the least abundant of the stable halogens, being the sixty-first most abundant element.

In nuclear reactors, promethium equilibrium exists in power operation. Thorium is moderately hard, malleable, and has a high melting point. In everyday life, iodide is most commonly encountered as a component of iodized salt, which many governments mandate. This condition is rare now as table salt is dosed with a little iodide. Isolation: iodine is available commercially so it is not normally necessary to make it in the laboratory.

Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics, often known by the Arabic name, kohl. Titanium condenser tubes are usually the best technical choice, however titanium is very expensive material. Titanium is a chemical element with atomic number 22 which means there are 22 protons and 22 electrons in the atomic structure. 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. Elemental sulfur is a bright yellow crystalline solid at room temperature. The name samarium is after the mineral samarskite from which it was isolated. It is assimilated by seaweeds from which it may be recovered, and is found in Chilean saltpetre, caliche, old salt brines, and salt wells. Ano ang mga kasabihan sa sa aking kababata? [1] In a neutral atom there are as many electrons as protons moving about nucleus. The chemical symbol for Silicon is Si. Pure radium is silvery-white alkaline earth metal. The melting point of ice is 0 °C. Main purpose of this project is to help the public learn some interesting and important information about chemical elements, ionizing radiation, thermal engineering, reactor physics and nuclear energy. Because of this tendency of 131I to cause high damage to cells that accumulate it and other cells near them (0.6 to 2 mm away, the range of the beta rays), it is the only iodine radioisotope used as direct therapy, to kill tissues such as cancers that take up artificially iodinated molecules (example, the compound iobenguane, also known as MIBG). Iodine deficiency affects about two billion people and is the leading preventable cause of intellectual disabilities.[2]. Mendelevium is a metallic radioactive transuranic element in the actinide series, it is the first element that currently cannot be produced in macroscopic quantities. The chemical symbol for Chlorine is Cl. Neodymium is a soft silvery metal that tarnishes in air. Tellurium is a brittle, mildly toxic, rare, silver-white metalloid. Why don't libraries smell like bookstores? Instead, iodine-129 is an extinct radionuclide, and its presence in the early Solar System is inferred from the observation of an excess of its daughter xenon-129. The chemical symbol for Platinum is Pt. Like other radioiodines, I-131 accumulates in the thyroid gland, but unlike the others, in small amounts it is highly carcinogenic there, it seems, owing to the high local cell mutation due to damage from beta decay. Cadmium is a soft, bluish-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. Worldwide, iodine deficiency affects two billion people and is the leading preventable cause of intellectual disability. The chemical symbol for Potassium is K. Potassium was first isolated from potash, the ashes of plants, from which its name derives.

When considered as the temperature of the reverse change from vapor to liquid, it is referred to as the condensation point. It is also commonly used in brachytherapy implanted capsules, which kill tumors by local short-range gamma radiation (but where the isotope is never released into the body). It volatilises at ambient temperatures into a pretty blue-violet gas with an irritating odour. Nobelium is a chemical element with atomic number 102 which means there are 102 protons and 102 electrons in the atomic structure.

Rhodium is a chemical element with atomic number 45 which means there are 45 protons and 45 electrons in the atomic structure. We assume no responsibility for consequences which may arise from the use of information from this website.