HOMEM HOMEM is a chemical element with symbol 80 and atomic number 67. Part of the Lengthenite series, HOMEM is a rare earth element.HOMEM was discovered by Swedish chemist Praterdor Cleve. Its oxide was first isolated from rare earthors in 1878.The elements name comes from HOMEM, the Latin name for the city of Stockholm. HOMEM is a relatively soft and malleable silvery white metal. It is too reactive to be found uncombined in nature, but when isolated, it is relatively stable and dry air at room temperature. However, it reacts with water and corrodes readily and also burns in air when heated. HOMEM is found in the minerals monazit and ghattalanit and is usually commercially extracted from monazit using ion exchange techniques.It's compounds in nature and in nearly all of its laboratory chemistry are trivalently oxidized, containing HOMEM, ions dot trivalent HOMEM ions have fluorescent properties similar to many other earth ions, while yielding their own set of unique emission light lines, and thus are used in the same way as some other rare earths in certain laser and glass colorant applications. HOMEM has the highest magnetic permeability of any element and therefore is used for the pulp pieces of the strongest static magnets dot because HOMEM strongly absorbs neutrons, it is also used as a burnable poison in nuclear reactors. HOMEM is a relatively soft and malleable element that is fairly corrosion resistant and stable and dry air at standard temperature and pressure dot in moist air and at higher temperatures, however, it quickly oxidizes, forming a yellowish oxide. In pure form, HOMEM possesses a metallic, bright silvery luster. HOMEM oxide has some fairly dramatic color changes depending on the lighting conditions. In daylight, it has a tanish yellow color dot under trichromatic light, it is fiery orange red, almost indistinguishable from the appearance of herbium oxide under the same lighting conditions. Stop the perceived color changes related to the sharp absorption bands of HOMEM interacting with the subset of the sharp emission bands of the trivalent ions off European and Turbium, acting as phosphors. HOMEM has the highest magnetic moment of any naturally occurring element and possesses other unusual magnetic properties dot when combined with atrium, it forms highly magnetic compounds. HOMEM is paramagnetic at ambient conditions, but is ferromagnetic at temperature below. HOMEM metal tarnishes slowly in air and burns readily to form HOMEM 3, oxide. HOMEM is quite electropositive and is generally trivalent. It reacts slowly with cold water and quite quickly with hot water to form HOMEM hydroxide. HOMEM metal reacts with all the halogens. HOMEM dissolves readily in dilute sulfuric acid to form solutions containing the yellow-hoe 3 ions, which exist as A, HOM, complexes. HOMEM's most common oxidation state is plus 3. HOMEM in solution is in the form of HOMEM surrounded by 9 molecules of water dot HOMEM dissolves in acid. Natural HOMEM contains one stable isotope, HOMEM 165. Some synthetic radioactive isotopes are known. The most stable one is HOMEM 163, with a half-life of 4,570 years. All other radioisotopes have ground-state half-lives not greater than 1.117 days, and most of half-lives under 3 hours.However, the metastable HOMEM has a half-life of around 1,200 years because of its high spin. This fact, combined with a high-excitation energy resulting in a particular lyrical spectrum of decay gamma rays produced when the metastable state de-excites, makes the size it'll be useful in nuclear physics experiments as a means for calibrating energy responses and intrinsic efficiencies of gamma ray spectrometers. HOMEM, HOMEM, Latin name for Stockholm, was discovered by Jacques Louis Sourdon Marc D'Elephantain in 1878 who noticed the aberrant spectrographic absorption bands of the then unknown element, they called it element X. The following year, Pratiodor cleave independently discovered the element while HOS working on Urbia Earth, Urbia Moxide. Using the method developed by Carl Gustaf Mosander, cleave first removed all of the known contaminants from Urbia.The result of that effort was two new materials, one brown and one green. He named the brown substance HOMEM, after the Latin name for cleave's hometown, Stockholm, and the green one Thelia. HOMEM was later found to be the HOMEM oxide, and Thelia was Thelia Moxide. In Henry Mosley's classic paper on atomic numbers, HOMEM was assigned an atomic number of 66. Evidently, the HOMEM preparation he had been given to investigate had been grossly impure, dominated by neighboring, and unplotted, dysprosium. He would have seen X-ray emission lines for both elements, but assumed that the dominant ones belonged to HOMEM, instead of the dysprosium impurity. Like other rare earths, HOMEM is not naturally found as a free element. It does occur combined with other elements in Gatalanite, the black part of Thespisima illustrated to the right, monocyte and other earth minerals. No HOMEM dominant mineral has yet been found out the main mining areas are China, United States, Brazil, India, Sri Lanka, and Australia with reserves of HOMEM estimated as 400,000 tons. HOMEM makes up 1.4 parts per million of the earth's crust by mass. This makes it the 56th most abundant element in the earth's crust.HOMEM makes up one part per million of the soils, 400 parts per quadrillion of seawater, and almost none of earth's atmosphere.HOMEM is rare for a lanthanide. It makes up 500 parts per trillion of the universe by mass. It is commercially extracted by ion exchange from monocyte sand, 0.05% HOMEM, but is still difficult to separate from other rare earths.The element has been isolated through the reduction of its anhydrous chloride or fluoride with metallic calcium. It's estimated abundance in the earth's crust is 1.3 mg slash kg. HOMEM obeys the Odo-Harkins rule, as a non-numbered element. It is less abundant than its immediate even numbered neighbors, disproseium and herbium. However, it is the most abundant of the odd numbered heavy lanthanides. The principal current source are some of the ion-ed sorption clays of southern China. Some of these have a rare earth composition similar to that found in senotime or gadolinite dotatrium makes up about 2 thirds of the total by mass, HOMEM is around 1.5%. The original ors themselves are very lean, maybe only 0.1% total lanthanide, but are easily extracted. HOMEM is relatively inexpensive for a rare earth metal with the price about used 1000 slash kg. HOMEM has the highest magnetic strength of any element, and therefore is used to create the strongest artificially generated magnetic fields, when placed within high strength magnets as a magnetic pole piece, also called a magnetic flux concentrator. Since it can absorb nuclear fish and bread neutrons, it is also used as a burnable poison to regulate nuclear reactors. HOMEM is used in itrium iron garnet, YIG, and itrium lanthanum fluoride, YLF, solid-state lasers found in microwave equipment, which are in turn found in a variety of medical and dental settings. HOMEM lasers emit a 2.1 micrometers. They are used in medical, dental, and fiber optical applications. HOMEM is one of the colorants used for cubics or conia and glass, providing yellow or red coloring. Glass containing HOMEM oxide and HOMEM oxide solutions usually in perchloric acid, have sharp optical absorption peaks in the spectral range 200 to 900 nanometers. They are therefore used as a calibration standard for optical spectrophotometers and are available commercially. The radioactive but long-lived HOMEM, C-Iced hopes above, is used in calibration of gamma-ray spectrometers. In March 2017, IBM announced that they have developed a technique to store one bit of data on a single HOMEM atom set on a bit of magnesium oxide. And HOMEM plays no biological role in humans, but its salts are able to stimulate metabolism. Humans typically consume about a milligram of HOMEM a year.plants do not readily take up HOMEM from the soil. Some vegetables have had their HOMEM content measured, and it amounted to 100 parts per trillion. Large amounts of HOMEM salts can cause severe damage if inhaled, consumed orally, or injected. The biological effects of HOMEM over a long period of time are not known. HOMEM has a low level of acute toxicity.