## what is dysprosium

The transition of a substance directly from the solid to the gas phase without passing through a liquid phase. Look at $\frac{\mathrm{d}y}{\mathrm{d}x}$ as just any other variable, and then apply the rule. Dysprosium is located at position 66 on the periodic table. Symbol: Dy; atomic weight: 162.50; atomic number: 66. This has led to applications in data storage devices, such as compact discs. The rare earth is a key ingredient for emerging technologies and is used in magnets for electric vehicles. Define dysprosium. A horizontal row in the periodic table. He came from Cognac in France, so you will not be surprised to learn that his family made cognac. its thermal neutron absorption cross-section and high melting point suggest metallurgical uses in nuclear control applications for alloying with special stainless steels in combination with vanadium and other earth, dysprosium is used for making laser materials Niobe had a fairly hard time of it. It is never found as a free element, but has its presence in various minerals which include fergusonite, gadolinite, and xenotime among others. The salt enables the lamps to give out a very intense white light. Its symbol is Dy and it belongs to the group of lanthanides and its normal state in nature is solid. A vertical column in the periodic table. It can also be prepared by the reduction of dysprosium trifluoride with calcium metal. Dysprosium (chemická značka Dy, latinsky Dysprosium) je měkký stříbřitě bílý, přechodný kovový prvek, 10. člen skupiny lanthanoidů.Nachází využití při výrobě … Add Δx. ISO 3166-1 alpha-2 code for Dahomey before it changed its name to Benin. As for your question, d²y / dx² = 3x² + 2. This is approximately the sum of the number of protons and neutrons in the nucleus. It provides a measure of how difficult it is to extend a material, with a value given by the ratio of tensile strength to tensile strain. The availability of suitable substitutes for a given commodity. 'Dysprosium' is one option -- get in to view more @ The Web's largest and most authoritative acronyms and abbreviations resource. Text © The Royal Society of Chemistry 1999-2011 As a result, it doesn't have as many applications as other elements that have been studied longer. We hope that you enjoy your visit to this Site. This article was most recently revised and updated by, https://www.britannica.com/science/dysprosium, dysprosium - Student Encyclopedia (Ages 11 and up). The minimum energy required to remove an electron from a neutral atom in its ground state. The greek gods weren't very forgiving of this kind of hubris and as a punishment killed if not all then most of her twelve children - the Niobids. With a high value, high purity, dysprosium rich product, the Company is set to become a long term and reliable supplier of dysprosium and other critical heavy rare earths to world markets. Likewise the noble gases could easily be separated once cryogenics became feasible, thanks to the invention of Dewar's flask. Relative atomic mass It is a rare earth element with a metallic silver luster. The Chemical Abstracts Service registry number is a unique identifier of a particular chemical, designed to prevent confusion arising from different languages and naming systems. Dysprosium definition is - an element of the rare-earth group that forms highly magnetic compounds. The availability of suitable substitutes for a given commodity. The metal dust presents a fire and explosion hazard. Find out what is the full meaning of DY on Abbreviations.com! Dysprosium was discovered in 1886 by Paul-Émile Lecoq de Boisbaudran in Paris. Dysprosium has a bright, silvery-metallic appearance. If you want to know more about this element, Facts about Dysprosium will elaborate it more. Dysprosium has a high thermal neutron absorption cross-section, meaning that it is very good at absorbing neutrons. Data for this section been provided by the British Geological Survey. "Dysprosium" in different languages. Elements are organised into blocks by the orbital type in which the outer electrons are found. dysprosium synonyms, dysprosium pronunciation, dysprosium translation, English dictionary definition of dysprosium. The element was christened after Niobe the daughter of Tantalus in greek mythology. Each allotrope has different physical properties. Copyright of and ownership in the Images reside with Murray Robertson. The arrangements of electrons above the last (closed shell) noble gas. These have applications including the film industry; the lamps have a high luminous efficiency whilst they can be dimmed appreciably whilst still maintaining the same "colour temperature". Dysprosium (symbol Dy, number 66) is a rare element, which is never found as a free element in nature. Obviously, the transuranium elements were a spin-off from developments in radiochemistry accompanying the Manhattan project - the second world war project to develop the first atomic bomb. Overview Dysprosium is one of 15 rare earth [1] elements. Common chemical compounds are also provided for many elements. CAS number Compounds [ … Dysprosium metal can be produced by reduction of its trifluoride with calcium metal. See more. Pure samples of dysprosium were first produced in the 1950s. Dysprosium is a rare earth element that has a metallic, bright silver luster. Half of the distance between two atoms within a single covalent bond. DYSPROSIUM (REVISED) Note: This article, originally published in 1998, was updated in 2006 for the eBook edition. The mass of an atom relative to that of carbon-12. Murray Robertson is the artist behind the images which make up Visual Elements. Until then I'm Meera Senthilingam, thanks for listening and goodbye. Dysprosium can be found in a number of minerals. Information and translations of DY in the most comprehensive dictionary definitions resource on the web. The Element Dysprosium - Known Isotopes. You may be familiar with elements such as carbon, oxygen, and nitrogen, but have you ever heard of dysprosium? The Dy percentages shown in Figure 2 are typical for materials where all the Dy is added to the starting alloy. In such cases we would ask you to sign a Visual Elements licence agreement, tailored to the specific use you propose. It also occurs in the products of nuclear fission. Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. Which day of the week you were born, which day your next birthday will be on, or if the Moon landing was on a Saturday or a Sunday. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. This week an element which played hard to get but once caught gave a wide range of chemical applications. Low = substitution is possible with little or no economic and/or performance impact. Low in toxicity, the metal has no known biological role. Density is the mass of a substance that would fill 1 cm3 at room temperature. Dysprosium is a chemical element with symbol Dy and atomic number 66. Like other rare earth elements, it has many applications in modern society. The energy released when an electron is added to the neutral atom and a negative ion is formed. we looked at how to do a derivative using differences and limits.. Dysprosiumin atomimassa on 162,50. It is given by the ratio of the pressure on a body to the fractional decrease in volume. Find the latest Dycom Industries, Inc. (DY) stock quote, history, news and other vital information to help you with your stock trading and investing. In no event shall the RSC be liable for any damages including, without limitation, indirect or consequential damages, or any damages whatsoever arising from use or loss of use, data or profits, whether in action of contract, negligence or other tortious action, arising out of or in connection with the use of the material available from this Site. Sources Dysprosium is never encountered as the free element. These values were determined using several different methods. The tendency of an atom to attract electrons towards itself, expressed on a relative scale. The metal was isolated by Georges Urbain, another French chemist, in 1906. The name is derived from the Greek 'dysprositos', meaning hard to get. Its discovery came as a result of research into yttrium oxide, first made in 1794, and from which other rare earths (aka lanthanoids) were subsequently to be extracted, namely erbium in 1843, then holmium in 1878, and finally dysprosium. The description of the element in its natural form. Electron configuration This was used as an international standard for shipping to Dahomey. The temperature at which the solid–liquid phase change occurs. It is obtained from ion-adsorption clay ores of southern China. All metallic nitrates are inorganic salts of a given metal cation and the nitrate anion. Boiling point Commercial use of the Images will be charged at a rate based on the particular use, prices on application. Meaning of DY. How well do you know their symbols? Some elements exist in several different structural forms, called allotropes. A dysprosium oxide-nickel cermet (a composite material of ceramic and metal) is used in nuclear reactor control rods. Corrections? The higher the value, the larger risk there is to supply. The metal slowly reacts with water and quickly dissolves in diluted acids—except hydrofluoric acid (HF), in which it forms a protective layer of insoluble DyF3. These are discharge lamps where the dysprosium iodide emits over a range of frequencies, giving a good colour rendering. It is a magnetostrictive material, meaning that when it is put into a magnetic field, it changes shape, reversibly. We welcome your feedback. The metal has been prepared by metallothermic reduction of the anhydrous halides with alkali or alkaline-earth metals. Half of the distance between two unbonded atoms of the same element when the electrostatic forces are balanced. Members of a group typically have similar properties and electron configurations in their outer shell. You may browse, download or print out one copy of the material displayed on the Site for your personal, non-commercial, non-public use, but you must retain all copyright and other proprietary notices contained on the materials. This is calculated by combining the scores for crustal abundance, reserve distribution, production concentration, substitutability, recycling rate and political stability scores. Atoms of the same element with different numbers of neutrons. The image is a stylised depiction of a nuclear reactor, reflecting the use of the element in reactor control rods. Omissions? Isotopes: Dysprosium has 29 isotopes whose half-lives are known, with mass numbers 141 to 169. A measure of the propensity of a substance to evaporate. High = substitution not possible or very difficult. These values were determined using several different methods. The arrangements of electrons above the last (closed shell) noble gas. Dysprosium is a rare earth metal which does not actually mean that it is rare. Latent Heat of Vaporization of Dysprosium is 230.1 kJ/mol. Tiny quantities of dysprosium can make magnets in electric motors lighter by 90 per cent, while terbium--which is soft enough to cut with a knife--is a key component of low-energy light bulbs, which use 80 per cent less electricity than traditional incandescent globes. A higher recycling rate may reduce risk to supply. It took him over 30 goes to do this, so he named the element accordingly, from the Greek word, dysprositos, meaning "hard to get at". The metal is further purified by vacuum distillation. You can apply this operator to a (differentiable) function. Dysprosium is a rare chemical element which has symbol Dy and has atomic number 66. Dysprosium turnings ignite easily and burn white-hot. Get exclusive access to content from our 1768 First Edition with your subscription. Electron affinityThe energy released when an electron is added to the neutral atom and a negative ion is formed. Values are given for typical oxidation number and coordination. A horizontal row in the periodic table. The mass of an atom relative to that of carbon-12. Dysprosium exists in three allotropic (structural) forms. Dysprosium's characteristics can be strongly affected by the presence of impurities. This WebElements periodic table page contains index for the element dysprosium Most of the isotope data on this site has been obtained from the National Nuclear Data Center.Please visit their site for more information.. Isotopes With A Known Natural Abundance She was foolish enough to suggest that rather than worshipping invisible gods, it might be a nice idea to appreciate real people for a change. De Boisbaudran’s method had involved endless precipitations carried out on the marble slab of his fireplace at home. It is called dysprosium and it's set to play a big part in the future of the world. Looking for online definition of DY or what DY stands for? The number of atoms of the element per 1 million atoms of the Earth’s crust. Dysprosium is considered as a rare element on earth. Dysprosium metal is highly reactive due to which it pure form is not as usual as its alloy. In the periodic system, it has the atomic number of 66 and symbol Dy. DY is listed in the World's largest and most authoritative dictionary database of abbreviations and acronyms DY is listed in the World's largest and most authoritative dictionary database of abbreviations and acronyms Period You're listening to Chemistry in its element brought to you by. Dysprosium iodide is used in halide discharge lamps. Specific Heat. It reacts with cold water and rapidly dissolves in acids. Maybe not. Finds the day of the week for any date. Chemically, dysprosium behaves as a typical trivalent rare earth and forms a series of pale yellow compounds in which its oxidation state is +3. As a pure metal it is little used, because it reacts readily with water and air. That was Simon Cotton explaining the widely applied chemistry of dysprosium. In common with many other lanthanides, dysprosium is found in the minerals monazite and bastnaesite. In pictures obtained by Page Six, Meghan Markle and Prince Harry were seen running errands in Beverly Hills around a week ago. This property is important for magnets used in motors or generators. Dysprosium was discovered by Paul-Émile Lecoq de Boisbaudran, a French chemist, in 1886 as an impurity in erbia, the oxide of erbium. The transition of a substance directly from the solid to the gas phase without passing through a liquid phase. Images © Murray Robertson 1999-2011 Element Dysprosium - Dy. Dysprosium atoms have 66 electrons and the shell structure is 2.8.18.28.8.2. The temperature at which the solid–liquid phase change occurs. To find d²y / dx² just differentiate dy / dx. This was the code used in international transactions to and from Dahomean bank accounts. Medium = substitution is possible but there may be an economic and/or performance impact Definition of DY in the Definitions.net dictionary. These blocks are named for the characteristic spectra they produce: sharp (s), principal (p), diffuse (d), and fundamental (f). From then on it was possible to separate the rare earth elements in a reliable and efficient manner, although that method of separation has now been superseded by liquid-liquid exchange technology. It's actually twice as abundant as tin. … High = substitution not possible or very difficult. Dysprosium has no known biological role. Name: Dysprosium Symbol: Dy Atomic Number: 66 Atomic Mass: 162.5 amu Melting Point: 1412.0 °C (1685.15 K, 2573.6 °F) Boiling Point: 2562.0 °C (2835.15 K, 4643.6 °F) Number of Protons/Electrons: 66 Number of Neutrons: 97 Classification: Rare Earth Crystal Structure: Hexagonal Density @ 293 K: 8.536 g/cm 3 Color: Unknown Atomic Structure This is where the artist explains his interpretation of the element and the science behind the picture. Where more than one isotope exists, the value given is the abundance weighted average. Chemistry in its element is brought to you by the Royal Society of Chemistry and produced by. Now next week, a mythological element that appears to be weeping. In the mid-19th century, Bunsen and Kirchhoff found that different elements emitted light of different frequencies when hot, and used this to identify new elements such as rubidium and caesium. It is stable in air at room temperature even if it is slowly oxydized by oxygen. References. Pure samples of dysprosium were not available until Frank Spedding and co-workers at Iowa State University developed the technique of ion-exchange chromatography around 1950. The temperature at which the liquid–gas phase change occurs. Because of this, it is used to make the control rods that are put into nuclear reactors to absorb excess neutrons and stop fission reactions getting out of control. Applications. Isotopes See more. It is also found in smaller quantities in several other minerals such as xenotime and fergusonite. When there's no other reason to choose your variables, you'll typically choose $x$ to denote the independent variable and $y$ to denote the dependent variable. The γ-phase is body-centred cubic with a = 4.03 Å at 1,381 °C (2,518 °F). Please enable JavaScript to access the full features of the site. Dysprosium is a naturally occurring element which consists of seven isotopes among which 164Dy is … What does DY mean? Dysprosium Nitrate Pentahydrate is a highly water soluble crystalline Dysprosium source for uses compatible with nitrates and lower (acidic) pH. It is given by the ratio of the shear stress to the shear strain. Dysprosium is a relatively hard metal and is silvery white in its pure form. (Dy) [ dis-pro´ze-um] a chemical element, atomic number 66, atomic weight 162.50. Dysprosium is a chemical element with the symbol Dy and atomic number 66. You may not further copy, alter, distribute or otherwise use any of the materials from this Site without the advance, written consent of the RSC. Despite recent improvements in alloying and processing, considerable dysprosium is still required for high temperature applications. Melting point Nor shall the RSC be in any event liable for any damage to your computer equipment or software which may occur on account of your access to or use of the Site, or your downloading of materials, data, text, software, or images from the Site, whether caused by a virus, bug or otherwise. n. Symbol Dy A soft, silvery metallic element of the lanthanide series occurring in the minerals monazite and bastnaesite, used in nuclear reactor control... Dysprosium - definition of dysprosium by The Free Dictionary. Dysprosium is a silver rare earth metal with atomic number 66 and element symbol Dy. All dysprosium compounds should be regarded as highly toxic although initial evidence would appear to suggest the danger is limited. Symbol: Dy; atomic weight: 162.50; atomic number: 66. Like other heavier lanthanides, dysprosium has a lot of unpaired electrons, giving both the metal and its ions a high magnetic susceptibility. This is approximately the sum of the number of protons and neutrons in the nucleus. The major use of dysprosium is as an alloying addition to Nd2Fe14B permanent magnet materials (in which some of the neodymium is substituted with dysprosium) to increase both the Curie point and especially the coercivity and, therefore, improve the high-temperature performance of the alloy. A derivative is something that is derived from another thing. The percentage of the world reserves located in the country with the largest reserves. Thi metals alloy is used in magnate as it is resistance to high temperature. 2. Excluding nuclear isomers, a total of 29 radioactive isotopes of dysprosium are known. As the Investing News Network has previously discussed, deposits rich in heavy rare earths like dysprosium are less common than deposits rich in light rare earths. The naturally occurring isotopes are all stable and have mass numbers 164 (natural abundance 28.3 percent), 162 (25.5 percent), 163 (24.9 percent), 161 (18.9 percent), 160 (2.33 percent), 158 (0.10 percent), and 156 (0.06 percent). As a result Niobe fled to mount Sipylus and was turned to stone. Naturally occurring dysprosium is a mixture of seven isotopes and they are found in the percentages shown: 156 Dy (0.06%), 158 Dy (0.1%), 160 Dy (2.3%), 161 Dy (18.9%), 162 Dy (25.5%), 163 Dy (24.9%) and 164 Dy … Welcome to "A Visual Interpretation of The Table of Elements", the most striking version of the periodic table on the web. Each allotrope has different physical properties. To achieve the separation, he used precipitations with ammonia and with oxalate, checking the fractions spectroscopically. ISO 3166-2 geocode for Dahomey. These magnets are used in wind turbines and electrical vehicles, so demand for dysprosium is growing rapidly. d²y / dx² is the second derivative and is denoted by y" or f"(x). It has seven isotopes. Because of this, it is used to make the control rods that are put into nuclear reactors to absorb excess neutrons and stop fission reactions getting out of control. In the periodic system, it has the atomic number of 66 and symbol Dy. Dysprosium's not like that, it has many applications and as time goes on it will have even more. There is to this day a rock formation in the Aegean region of Turkey termed the weeping rock that resembles a woman's face purportably Niobe's. The percentage of a commodity which is recycled. Huheey, E.A. Dysprosium. This is a good description of this mysterious element because it was not isolated in pure form until the 1950s. A vertical column in the periodic table. A measure of how difficult it is to deform a material. It is defined as being the charge that an atom would have if all bonds were ionic. Values are given for typical oxidation number and coordination. Looking for the definition of DY? Dysprosium is considered as a rare element on earth. The metal is a very strong paramagnet above approximately 180 K (−93 °C, or −136 °F); it is antiferromagnetic between about 90 (−183 °C, or −298 °F) and 180 K and ferromagnetic below 90 K. French chemist Paul-Émile Lecoq de Boisbaudran first found this element (1886) associated with holmium and other heavy lanthanides; French chemist Georges Urbain later (1906) was able to prepare a reasonably pure fraction. Dysprosium metal is a soft, lustrous-silver rare earth element (REE) that is used in permanent magnets due to its paramagnetic strength and high-temperature durability. It has low toxicity. One very unusual application for dysprosium is in the alloy Terfenol-D, which also contains terbium and iron. Let us know if you have suggestions to improve this article (requires login). The α-phase is close-packed hexagonal with a = 3.5915 Å and c = 5.6501 Å at room temperature. Sen lyhenne on Dy ja atomiluku 66 sekä CAS-numero 7429-91-6. Dysprosium (symbol Dy, number 66) is a rare element, which is never found as a free element in nature. The Chemical Abstracts Service registry number is a unique identifier of a particular chemical, designed to prevent confusion arising from different languages and naming systems. 1. The element is primarily used in research and industrial applications, and most consumers do not handle it directly, although they may benefit from its use or purchase products which are made with the assistance of dysprosium. Like other rare earth elements, it has many applications in modern society. Here are interesting dysprosium facts, including its history, uses, sources, and properties. Short form of the abbreviation, or pronounciation of DWAI. Keiter, and R.L. The ground state electronic configuration of neutral dysprosium is [Xe].4f 10.6s 2 and the term symbol of dysprosium is 5 I 8.. Dysprosium: description Your user agent does not support the HTML5 Audio element. dy / dx is the first derivative and is denoted by y' or f'(x). It is quite stable in air, remaining shiny at room temperature. Covalent radiusHalf of the distance between two atoms within a single covalent bond. The RSC makes no representations whatsoever about the suitability of the information contained in the documents and related graphics published on this Site for any purpose. Dysprosium's characteristics can be strongly affected by the presence of impurities. The role of the element in humans, animals and plants. Dysprosium is a relatively hard metal and is silvery white in its pure form. Dysprosium is a metallic chemical element in the lanthanide group of the periodic table of elements; elements in this group are sometimes referred to as rare earth metals. The percentage of an element produced in the top producing country. Commercial separation is performed by liquid-liquid extraction or ion-exchange methods. ‘Each segment contains small amounts of ions of relatively rare metals, such as dysprosium, thulium, and cerium, which fluoresce in different colors.’ Dysprosium (Dy), chemical element, a rare-earth metal of the lanthanide series of the periodic table. At that time, scientists were using improved techniques such as fractional crystallisation to obtain the individual lanthanides from mixtures. Dysprosium can be found in a number of minerals. The metal was discovered by a French chemist named Paul-Émile Lecoq de Boisbaudran in the year 1886. It readily absorbs neutrons, and does not swell or contract when bombarded with neutrons for long periods. The name rare earth is misleading because the elements in this group are not especially uncommon. This has found applications in ships' sonar systems (underwater radar using soundwaves) and in all sorts of sensors and transducers. Dysprosium is used in control rods for nuclear reactors because of its relatively high neutron-absorption cross section; its compounds have been used for making laser materials and phosphor activators, and in metal halide lamps. dysprosium. It forms several brightly coloured salts. Dysprosium was first identified in Paris in 1886 by French chemist Paul Émile Lecoq de Boisbaudran . Dysprosium (Dy), chemical element, a rare-earth metal of the lanthanide series of the periodic table. Uncombined elements have an oxidation state of 0. The atomic number of each element increases by one, reading from left to right. Where more than one isotope exists, the value given is the abundance weighted average. This is because it is resistant to demagnetisation at high temperatures. And move away from the tears to find out the colourful and superconducting chemistry of the element niobium with Jon Steed in next week's Chemistry in its Element. Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... 118 Names and Symbols of the Periodic Table Quiz. If you wish to use the Images in a manner not permitted by these terms and conditions please contact the Publishing Services Department by email. Here are interesting dysprosium facts, including its history, uses, sources, and properties. The number of protons in an atom. As a result, dysprosium and other heavy rare metals are often mor… In 1879 Lecoq went on to extract pure samarium from the mineral samarskite whilst in 1886 he was the first person to identify dysprosium by separating its oxide from holmium oxide. So elementally changing the connotations of the greek prefix. Dysprosium. The temperature at which the liquid–gas phase change occurs. For more information on the Visual Elements image see the Uses and properties section below. The higher the value, the larger risk there is to supply. The images may not be posted on any website, shared in any disc library, image storage mechanism, network system or similar arrangement. Naturally occurring dysprosium (66 Dy) is composed of 7 stable isotopes, 156 Dy, 158 Dy, 160 Dy, 161 Dy, 162 Dy, 163 Dy and 164 Dy, with 164 Dy being the most abundant (28.18% natural abundance).Twenty-nine radioisotopes have been characterized, with the most stable being 154 Dy with a half-life of 3.0 million years, 159 Dy with a half-life of 144.4 days, and 166 Dy with a half-life of 81.6 hours. In this quiz you’ll be shown all 118 chemical symbols, and you’ll need to choose the name of the chemical element that each one represents.