While examining samples of gadolinite, Marignac found a new component in the earth then known as erbia, and he named it ytterbia, for Ytterby, the Swedish village near where he found the new component of erbium. Ytterbium dissolves slowly in water, but quickly in acids, liberating hydrogen gas. ytterbium is … As an alloy component it improves the dispersity, strength and mechanical characteristics. The metal is extracted from the solution as oxalate and converted to oxide by heating. Posted on décembre 14, 2020 [52] The body has about as much potassium as sulfur and chlorine, and only calcium and phosphorus are more abundant (with the exception of the ubiquitous CHON elements). Ytterbium also has 12 meta states, with the most stable being 169mYb (t1/2 46 seconds). Like europium, samarium, and thulium, the trihalides of ytterbium can be reduced to the dihalides by hydrogen, zinc dust, or by the addition of metallic ytterbium. Another laser that "ticks" 518 trillion times per second provokes a transition between two energy levels in the atoms. Creative Commons Attribution-Share-Alike License 3.0. Most ytterbium compounds are found in the +3 oxidation state, and its salts in this oxidation state are nearly colorless. [23] Ytterbium(III) oxide can be reduced to ytterbium(II) oxide (YbO) with elemental ytterbium, which crystallizes in the same structure as sodium chloride. [18], The chemical behavior of ytterbium is similar to that of the rest of the lanthanides. The alloy is treated with hydrochloric acid. Power levels have increased from the 1 kW regimes due to the advancements in components as well as the Yb-doped fibers. [8], Ytterbium was discovered by the Swiss chemist Jean Charles Galissard de Marignac in the year 1878. [24] Urbain and Welsbach accused each other of publishing results based on the other party. This property is used in stress gauges to monitor ground deformations from earthquakes and explosions. Ytterbium can also be used as a dopant to help improve the grain refinement, strength, and other mechanical properties of stainless steel. Translation for 'ytterbium' in the free French-English dictionary and many other English translations. Ytterbium has a density of 6.973 g/cm3, which is significantly lower than those of the neighboring lanthanides, thulium (9.32 g/cm3) and lutetium (9.841 g/cm3). Compare elements on more than 90 properties. ytterbium - Dictionary definition and meaning for word ytterbium. This is then dissolved using complexing agents, and due to the different types of bonding exhibited by the different lanthanides, it is possible to isolate the compounds. The world production of ytterbium is only about 50 tonnes per year, reflecting that it has few commercial applications. In order to achieve even higher power levels in ytterbium-based fiber systems. The oxide is reduced to metal by heating with lanthanum, aluminium, cerium or zirconium in high vacuum. Ytterbium is a chemical element with symbol Yb and atomic number 70. [42] The optimization of the ytterbium-doped glass itself through host glass modification of various dopants also plays a large part in reducing the background loss of the glass, improvements in slope efficiency of the fiber, and improved photodarkening performance, all of which contribute to increased power levels in 1 µm systems. Ytterbium is a chemical element with symbol Yb and atomic number 70. (3) It is extracted from its ores by heating lanthanum metal with ytterbium oxide. Neoytterbia later became known as the element ytterbium, and lutecia became known as the element lutetium. terbium 2 lettres. Natural ytterbium is a mixture of seven stable isotopes, which altogether are present at concentrations of 3 parts per million. Aide mots fléchés et mots croisés. Ytterby is the site of a quarry which yielded many unusual minerals containing rare earths and other elements. *Please select more than one item to compare Exemple: "P ris", "P.ris", "P,ris" ou "P*ris" Rechercher. It has a high chemical activity and forms stable oxides, halides and sulfides. Naturally occurring ytterbium (Yb) is composed of 7 stable isotopes, Yb-168, Yb-170, Yb-171, Yb-172, Yb-173, Yb-174, and Yb-176, with Yb-174 being the most abundant (31.83% natural abundance). A pair of experimental atomic clocks based on ytterbium atoms at the National Institute of Standards and Technology has set a record for stability. Licensed under Creative Commons Attribution 1.0 (Jurii). [13][14], The isotopes of ytterbium range in atomic weight from 147.9674 atomic mass unit (u) for 148Yb to 180.9562 u for 181Yb. The dihalides are susceptible to oxidation to the trihalides at room temperature and disproportionate to the trihalides and metallic ytterbium at high temperature:[8], Some ytterbium halides are used as reagents in organic synthesis. Ytterbium clocks hold the record for stability with ticks stable to within less than two parts in 1 quintillion (6982200000000000000♠2×10−18). [46], Although ytterbium is fairly stable chemically, it is stored in airtight containers and in an inert atmosphere such as a nitrogen-filled dry box to protect it from air and moisture. What is ytterbium? [44] The yellow-green ytterbium(II) ion is a very strong reducing agent and decomposes water, releasing hydrogen gas, and thus only the colorless ytterbium(III) ion occurs in aqueous solution. [8] The beta allotrope has a metallic electrical conductivity at normal atmospheric pressure, but it becomes a semiconductor when exposed to a pressure of about 16,000 atmospheres (1.6 GPa). The Austrian chemist Carl Auer von Welsbach independently isolated these elements from ytterbia at about the same time, but he called them aldebaranium and cassiopeium;[9] the American chemist Charles James also independently isolated these elements at about the same time. Ytterbium is normally difficult to separate from other rare earths, but ion-exchange and solvent extraction techniques developed in the mid- to late 20th century have simplified separation. In the latter method, a buffered acidic solution of trivalent rare earths is treated with molten sodium-mercury alloy, which reduces and dissolves Yb3+. [22], Ytterbium reacts with oxygen to form ytterbium(III) oxide (Yb2O3), which crystallizes in the "rare-earth C-type sesquioxide" structure which is related to the fluorite structure with one quarter of the anions removed, leading to ytterbium atoms in two different six coordinate (non-octahedral) environments. 70 i det periodiske system; Bøjning. NIST physicists reported in the August 22, 2013 issue of Science Express that the ytterbium clocks' ticks are stable to within less than two parts in 1 quintillion (1 followed by 18 zeros), roughly 10 times better than the previous best published results for other atomic clocks. Finely dispersed ytterbium readily oxidizes in air and under oxygen. [28], The 169Yb isotope (with a half-life of 32 days), which is created along with the short-lived 175Yb isotope (half-life 4.2 days) by neutron activation during the irradiation of ytterbium in nuclear reactors, has been used as a radiation source in portable X-ray machines. Seng relativ Atommass ass 173,04. Ytterbium en 2 lettres. Search results for ytterbium chloride at Sigma-Aldrich. By clicking on, (9827 views - Periodic Table Of Elements), National Institute of Standards and Technology (NIST), "Atomic weights of the elements 2013 (IUPAC Technical Report)", Commission on Isotopic Abundances and Atomic Weights, "Standard Atomic Weight of Ytterbium Revised", "The NUBASE Evaluation of Nuclear and Decay Properties", "Un nouvel élément, le lutécium, résultant du dédoublement de l'ytterbium de Marignac", Ytterbium Atomic Clocks Set Record for Stability, "Photonic Whispering-Gallery Resonations in New Environments", "Fiber for Fiber Lasers: Matching Active and Passive Fibers Improves Fiber Laser Performance", "NIST ytterbium atomic clocks set record for stability", Creative Commons Attribution-Share-Alike License 3.0. L'Utilisation de ces marques sur motscroisés.fr est uniquement à des fins d'information. Ytterbium is a soft, malleable and ductile chemical element that displays a bright silvery luster when pure.

In aqueous solution, like compounds of other late lanthanides, soluble ytterbium compounds form complexes with nine water molecules. The element is also found in euxenite and xenotime. The +2 state has a valence electron configuration of 4f14 because the fully filled f-shell gives more stability. A list of words that start with Ytterbium (words with the prefix Ytterbium). all factors of the fiber must be considered. The main mining areas are China, the United States, Brazil, India, Sri Lanka, and Australia. [8], Ytterbium forms both dihalides and trihalides with the halogens fluorine, chlorine, bromine, and iodine. The model with one single ytterbium ion caught in an ion trap is highly accurate. [8], Natural ytterbium is composed of seven stable isotopes: 168Yb, 170Yb, 171Yb, 172Yb, 173Yb, 174Yb, and 176Yb, with 174Yb being the most common, at 31.8% of the natural abundance). Ytterbium. [10] However, the alpha allotrope is diamagnetic. Wikipedia har en artikel om: Ytterbium. Ytterbium(III) oxide nanopowder, <100 nm particle size (BET), ≥99.7% trace metals basis Yb 2 O 3 99.7 Applications. Much progress has been made in the power scaling lasers and amplifiers produced with ytterbium (Yb) doped optical fibers. [6] The alpha allotrope (6.903 g/cm3) has a hexagonal crystalline structure and is stable at low temperatures. Marignac suspected that ytterbia was a compound of a new element that he called "ytterbium".[9][22]. Abonnez-vous à la lettre d'information L'erbium est un lanthanide gris ; l'oxyde d'erbium(III) (à droite) se présente sous la forme d'une poudre rose. EurLex-2 EurLex-2 Shocktrykmålere, som kan måle tryk på over 10 GPa, herunder målere fremstillet af manganin, ytterbium og polyvinylidenbifluorid (PVBF, PVF2) Schokdrukmeters die geschikt zijn voor het meten van druk hoger dan 10 GPa, waaronder meters die zijn gemaakt met manganine, ytterbium Ytterbium metal behaves similarly to europium metal and the alkaline earth metals, dissolving in ammonia to form blue electride salts. All of its remaining radioactive isotopes have half-lives that are less than two hours and most of these have half-lives are less than 20 minutes. [7] The beta allotrope (6.966 g/cm3) exists at room temperature, and it has a face-centered cubic crystal structure. authors in Wikipedia, This website uses tracking mechanisms by using technically not necessary cookies in order to offer and constantly improve its services, and to provide individual offers. Meaning and Definition of ytterbium. [21] Ytterbium(III) fluoride (YbF3) is used as an inert and non-toxic tooth filling as it continuously releases fluoride ions, which are good for dental health, and is also a good X-ray contrast agent. [45], Currently, ytterbium is being investigated as a possible replacement for magnesium in high density pyrotechnic payloads for kinematic infrared decoy flares. "Ytterbium", which is released under the [47] All compounds of ytterbium are treated as highly toxic, although studies appear to indicate that the danger is minimal. The Physikalisch-Technische Bundesanstalt is working on several such optical clocks. He suspected that ytterbia was a compound of a new element that he called "ytterbium" (in total, four elements were named after the village, the others being yttrium, terbium and erbium). Ytterbium can then be separated from other lanthanides by ion exchange, as can other lanthanides. Because of its closed-shell electron configuration, its density and melting and boiling points differ from those of the other lanthanides. [36][37], Usually, low concentrations of ytterbium are used. Sujet et définition de mots fléchés et mots croisés ⇒ YTTERBIUM sur motscroisés.fr toutes les solutions pour l'énigme YTTERBIUM avec 2 lettres. It is a rare earth element, and it is readily dissolved by the strong mineral acids. [8] The +2 oxidation state occurs only in solid compounds and reacts in some ways similarly to the alkaline earth metal compounds; for example, ytterbium(II) oxide (YbO) shows the same structure as calcium oxide (CaO). The primary decay products of ytterbium isotopes lighter than 174Yb are thulium isotopes, and the primary decay products of ytterbium isotopes with heavier than 174Yb are lutetium isotopes. Its electrical resistivity increases ten times upon compression to 39,000 atmospheres (3.9 GPa), but then drops to about 10% of its room-temperature resistivity at about 40,000 atm (4.0 GPa). [9], As an even-numbered lanthanide, in accordance with the Oddo-Harkins rule, ytterbium is significantly more abundant than its immediate neighbors, thulium and lutetium, which occur in the same concentrate at levels of about 0.5% each. The optical clock based on it is exact to 17 digits after the decimal point. The solution is then applied to a resin, which different lanthanides bind in different matters. It is one of the more commonly encountered compounds of ytterbium . YTTERBIUM Total Number of words Starting with YTTERBIUM found =2 YTTERBIUM comprises of 9 letters. We search a large scrabble dictionary for scrabble words starting with ytterbium - we take the letter or word you enter, and generate all words starting with Ytterbium.In addition there is a list of Words that end with ytterbium, words that contain ytterbium, and Synonyms of ytterbium.