is holmium a métal


By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. A measure of how difficult it is to deform a material. But monopoles have also been the subject of much real scientific debate. So there you have it: mythical monopoles and vaporising lasers. 2Ho(s) + 6H 2 O(g) → 2Ho(OH) 3 (aq) + 3H 2 (g) Reaction of holmium with the halogens. OCO GEODE HALVES 1/2 POUND LOT. It is electropositive and trivalent. There are 302 suppliers who sells holmium metal on Alibaba.com, mainly located in Asia. Holmium is a reactive metal. 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. High = substitution not possible or very difficult. Members of a group typically have similar properties and electron configurations in their outer shell. Where more than one isotope exists, the value given is the abundance weighted average. The transition of a substance directly from the solid to the gas phase without passing through a liquid phase. In 1878 Swiss chemists Marc Delafontaine and Jacques-Louis Soret observed previously unrecorded spectroscopic lines. The image is based upon the civic coat of arms of Stockholm, the city that gives the element its name. In such cases we would ask you to sign a Visual Elements licence agreement, tailored to the specific use you propose. The arrangements of electrons above the last (closed shell) noble gas. 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. Holmium metal is a soft and malleable rare earth element. The percentage of the world reserves located in the country with the largest reserves. It is extracted from those ores that are processed to extract yttrium. Electronegativity (Pauling scale)The tendency of an atom to attract electrons towards itself, expressed on a relative scale. The RSC has been granted the sole and exclusive right and licence to produce, publish and further license the Images. The energy released when an electron is added to the neutral atom and a negative ion is formed. The color of its oxide is a very pure yellow, which is used to stain special glass. Now, whilst no reputable scientist would argue that a magnetic monopole could open an inter-dimensional portal, its existence isn't outside the realms of possibility and if recent reports are anything to go by, it could depend on an otherwise mundane metallic element that you can find skulking around near the bottom of the Periodic Table - holmium. This is approximately the sum of the number of protons and neutrons in the nucleus. With the highest magnetic strength of any element, holmium is used to create the strongest artificial magnetic fields. At that temperature the metal orders antiferromagnetically, forming a basal plane spiral structure. The mass of an atom relative to that of carbon-12. 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. We cannot be certain that either group had produced a, You're listening to Chemistry in its element brought to you by. The atomic number of each element increases by one, reading from left to right. Holmium metal is soft and malleable rare earth element. Holmium Metal Rare Earth 99.9% Ho pure Element Sample in Periodic Element Tile. Holmium has been used as a component of some electronic devices; the ion Ho3+ has been used as a catalyst for ortho-para hydrogen conversion; and the oxide has been used as a special refractory. Melting point The temperature at which the solid–liquid phase change occurs. The temperature at which the liquid–gas phase change occurs. Articles from Britannica Encyclopedias for elementary and high school students. It is the element with the highest magnetic moment, therefore it has its main application within high-strength magnets. The basis for their existence relies on work by the Nobel Prize-winning physicist Paul Dirac. Holmium is, for a lanthanoid, quite resistant against oxidation. Both teams were investigating yttrium, which was contaminated with traces of other rare earths (aka lanthanoids) and had already yielded erbium which was later to yield ytterbium. Holmium (Ho) is a silver, rare earth metal, with the atomic number 67 and present in the 6th row, f-block of the periodic table. If you are in any doubt, please ask. $42.00. It is defined as being the charge that an atom would have if all bonds were ionic. The temperature at which the liquid–gas phase change occurs. A vertical column in the periodic table. It is tarnished slowly in the air. Holmium metal is generally immediately available in most volumes. It is soluble in inorganic acid. Holmium also react with all halogens to form HoF3 (Pink), HoCl3 (yellow), HoBr3 (yellow) and HoI3(yellow). The temperature at which the solid–liquid phase change occurs. Chemistry in its element is brought to you by the Royal Society of Chemistry and produced by. A vertical column in the periodic table. Holmium metal 99.9% . Natural ammonite fossil conch Crystal specimen healing+stand1PC. Not bad for an element you barely even knew existed. Metals do not all have to have ideal characteristics in order to be useful after all and holmium, like the rest of the lanthanides, is extremely difficult to isolate so that once it has been refined there are still markets willing to put the little-known metal to suitable tasks. 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. Group Holmium powder is dark gray fine particles, which has unusual magnetic property. Holmium has the highest magnetic moment (10.6 µB) of any naturally occurring element and has been used to create the highest known magnetic fields as a pole piece or magnetic flux concentrator. Holmium is slightly toxic if ingested Do not breath in the metal dust. 1,602 holmium copper alloy products are offered for sale by suppliers on Alibaba.com A wide variety of holmium copper alloy options are available to you, There are 6 suppliers who sells holmium copper alloy on Alibaba.com, mainly located in Asia. Holmium's claim to fame is as the Numero Uno among supermagnets beating out the far better known and fellow Rare Earther neodymium for the title but much less popular because its magnetic properties require special activators. Allotropes Where the element is most commonly found in nature, and how it is sourced commercially. Let us know if you have suggestions to improve this article (requires login). Holmium metal 99.9% . Holmium is atomic number 67 with element symbol Ho. The name is derived from the Latin name for Stockholm, 'Holmia'. It is mostly exist in +3 oxidation state. It expected that the price of holmium oxide will … Some elements exist in several different structural forms, called allotropes. Empirical Formula (Hill Notation) Ho . The metal adopts a close-packed hexagonal structure with a = 3.5778 Å and c = 5.6178 Å at room temperature. It dissolves in acids too . A percentile rank for the political stability of the country with the largest reserves, derived from World Bank governance indicators. A measure of how difficult it is to compress a substance. This article was most recently revised and updated by, https://www.britannica.com/science/holmium, holmium - Student Encyclopedia (Ages 11 and up). 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. 10mm cube weight is 8.9±0.1g. Uncombined elements have an oxidation state of 0. Our editors will review what you’ve submitted and determine whether to revise the article. This is calculated by combining the scores for crustal abundance, reserve distribution, production concentration, substitutability, recycling rate and political stability scores. 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. The higher the value, the larger risk there is to supply. 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. So that's about as glamorous and interesting as holmium gets - a minor role in a science fiction story and in a search that may, for all we know, end in nothing but disappointment. Only one stable isotope of holmium is found in nature: 165 Ho. The lasers can be used to vaporise tumours with only minor tissue damage; a patient with early stage bladder cancer can be in and out of hospital in an afternoon without a general anaesthetic. Atomic radius, non-bonded When isolated, holmium is a silvery white, relatively soft metal which usually remains stable at or around room temperature. Holmium is a moderately hard, silvery white metal that is relatively stable in air. PubChem Substance ID 329801926. …is found in dysprosium with holmium a very close second, 10.64 versus 10.60 Bohr magnetons; gadolinium’s...…, Chemical element, any substance that cannot be decomposed into simpler substances by ordinary...…, Rare-earth element, any member of the group of chemical elements consisting of three elements...…. Values are given for typical oxidation number and coordination. Low = substitution is possible with little or no economic and/or performance impact. Holmium has no known biological role, and is non-toxic. The number of atoms of the element per 1 million atoms of the Earth’s crust. Holmium is a silvery-white metal, which belongs to lanthanide series. Shipping Information: View shipping rates and policies; Holmium metal has an ability to absorb neutrons, so this metal is used in nuclear reactors to keep the chain reactions of elements under control. A horizontal row in the periodic table. When working with Holmium it is a good idea to always have some type of eye protection, mouth protection and gloves on. This week, mythical monopoles that could lead us into another dimension. High = substitution not possible or very difficult. from 4.00. For more information on the Visual Elements image see the Uses and properties section below. It is also used as a burnable poison in nuclear reactors due to its capability of absorbing neutrons. Block Images © Murray Robertson 1999-2011 Cleve named the element for his native city of Stockholm, its Latinized name being Holmia. It burns quickly and form holmium oxide. Holmium metal is fairly corrosion-resistant and stable in dry air at standard temperature and pressure but easily oxidizes in … Holmium metal belongs to the Lanthanides family. All such documents and related graphics are provided "as is" without any representation or endorsement made and warranty of any kind, whether expressed or implied, including but not limited to the implied warranties of fitness for a particular purpose, non-infringement, compatibility, security and accuracy. 225Ac can be used as the active agent Targeted Alpha Therapy, also known as TAT,a technique for inhibiting the growth of secondary cancers by direct irradiation with nuclear material. The silvery white metal holmium is quite electropositive and reacts slowly with cold water and quite quickly with hot water to form holmium hydroxide, Ho(OH) 3, and hydrogen gas (H 2). shipping: + $5.85 shipping . Political stability of top reserve holder. (5-7 PIECES) VERY NICE QUALITY GEODES. In fact, it has the strongest magnetic force of any element, albeit it as a paramagnet, which means it only becomes magnetic when it's sitting in an externally applied magnetic field. Holmium and its compounds have limited applications except for research. Pure holmium's luster is metallic to bright silver. It is also found in very, very small amounts in the body and affects metabolism in certain bacteria, but it doesn't seem to be essential and no one really knows what, exactly, it does. Elements are organised into blocks by the orbital type in which the outer electrons are found. These values were determined using several different methods. Murray Robertson is the artist behind the images which make up Visual Elements. So the search for the monopole continues, but vaporising tumours with minimal tissue damage is definitely a noteworthy application of holmium. Despite having little else to shout about - bar a silvery sheen and a bit part in controlling nuclear reactions - holmium has some pretty fascinating magnetic properties. $14.50. This statistic displays the price development of rare earth oxide holmium oxide globally from 2009 to 2025. So last year, when French scientists claimed to have found magnetic components in holmium titanate crystals that behaved for all intents and purposes like monopoles, they sparked a minor media storm. Please enable JavaScript to access the full features of the site. Until then I'm Meera Senthilingam and thank you for listening. According to theories, singular magnetic charges - monopoles - must exist in order to adhere to the grand unified theory of physics; to mirror the singular electric charges of elementary particles. The number of protons in an atom. MDL number MFCD00011049. It readily reacts with diluted acids but does not react with either diluted or concentrated hydrofluoric acid (HF), due to formation of a protective surface layer of HoF3. However, when heated in moist conditions, the element will oxidize, and it can react adversely with other metals. The percentage of an element produced in the top producing country. 1,095 holmium metal products are offered for sale by suppliers on Alibaba.com, of which rare earth & products accounts for 25%, other metals & metal products accounts for 1%. Holmium has the highest magnetic moment of the naturally occurring elements, and forms highly magnetic compounds when alloyed with yttrium. Delafontaine and Soret also extracted it from the same source, having seen unexplained lines in the atomic spectrum. Learn more about holmium in this article. Half of the distance between two unbonded atoms of the same element when the electrostatic forces are balanced. Some of the most cutting edge lasers used to treat certain cancers are solid-state lasers that require holmium to dope yttrium aluminium crystals. The one naturally occurring isotope, holmium-165, is stable. Holmium is a moderately hard, silvery white metal that is relatively stable in air. The availability of suitable substitutes for a given commodity. Holmium is a silvery gray metal found in the lanthanideseries on the periodic table, which is generally shown at the bottom. Its alloys are used in some magnets. Commercial use of the Images will be charged at a rate based on the particular use, prices on application. The classical methods of separating and purifying the element were fractional crystallization and precipitation, but solvent-solvent extraction and ion-exchange technologies have made available kilogram quantities of highly pure holmium oxide. It has a melting point of 1474°C, a boiling point of 2695°C, and a density of 8.7947g/㎝³. They announced the discovery of element ‘X’ – the element we now call holmium. The sum of the oxidation states within a compound or ion must equal the overall charge. It reacts slowly with cold water and quickly with hot water to form holmium hydroxide. Each allotrope has different physical properties. The element is categorized under the lanthanides. These values were determined using several different methods. NACRES NA.23 Holmium, chemical element, a rare-earth metal of the lanthanide series of the periodic table. There are numerous radioactive isotopes (a total of 35, not counting nuclear isomers), ranging from holmium-140 to holmium-175 and having half-lives from 4.1 milliseconds (holmium-141) to 4,570 years (holmium-163). So that's about as glamorous and interesting as holmium gets - a minor role in a science fiction story and in a search that may, for all we know, end in nothing but disappointment. Description of Holmium Metal. Data for this section been provided by the. This exotic metal is one of the fourteen other metals in the so-called Rare Earths group, none of which play any major role in industry outside of very specialized uses. These blocks are named for the characteristic spectra they produce: sharp (s), principal (p), diffuse (d), and fundamental (f). Popular . It has unusual electrical and magnetic properties and is used in nuclear reactors for its good absorption power. Holmium is a chemical element with atomic number 67 which means there are 67 protons in its nucleus.Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z.The total electrical charge of the nucleus is therefore +Ze, where e (elementary charge) equals to 1,602 x 10-19 coulombs. It is also the most magnetic element on the periodic table. A horizontal row in the periodic table. A measure of the propensity of a substance to evaporate. $19.99. In fact, in oxide form, it's used to colour cubic zirconia, the synthetic material that's sold as a cheap substitute for real gemstones. The role of the element in humans, animals and plants. 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. Values are given for typical oxidation number and coordination. Cleve looked more closely at what remained after the ytterbium had been removed, and realised it must contain yet other elements because he found that its atomic weight depended on its source. 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. The metal is relatively soft, malleable, and has unusual magnetic properties. Copyright of and ownership in the Images reside with Murray Robertson. The crystals contained tiny north and south pole points that were separated by less than a nanometre. Medium = substitution is possible but there may be an economic and/or performance impact, Low = substitution is possible with little or no economic and/or performance impact, If you wish to use the Images in a manner not permitted by these terms and conditions please contact the Publishing Services Department. (2)Holmium oxide wa… These blocks are named for the characteristic spectra they produce: sharp (s), principal (p), diffuse (d), and fundamental (f). (1) In 1879 Per Teodor Cleve in Sweden discovered two new materials – one brown and one green – while working with erbia (erbium oxide). Corrections? It dissolves easily in dilute sulfuric acid and form solution, which contain yellow Ho (lll) ions. The metal is a rare earth metal found in monazite, gadolinite and other minerals. As we know, the monopole has acquired the kind of fringe scientific status that makes it worthy of mention in science fiction circles - besides its appearance in Element 117, the author Larry Niven references monopoles in his 1973 novel Protector, where he imagines one of his characters mining shovelfuls of north poles from the rings of Saturn. First ionisation energyThe minimum energy required to remove an electron from a neutral atom in its ground state. That was science writer Hayley Birch with the mythical chemistry of holmium. Holmium metal can compound with various nonmetal elements nearly. Elements are organised into blocks by the orbital type in which the outer electrons are found. Cabrera and his troop of monopole hunters were given extra funding to build a bigger and better detector, but eventually abandoned their hunt in favour of a search for something similarly mysterious and just as elusive: dark matter. First though, let's create some context. You do not have JavaScript enabled. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. The availability of suitable substitutes for a given commodity. Monopoles are even talked about in the same breath as the ever elusive Higg's boson, with whisperings that CERN scientists could create them, along with black holes, in their experiments at the LHC. And as the 56th most abundant element, it's twenty times more common than silver and hardly deserving of its "rare earth metal" label. Holmium was discovered spectroscopically (1878) by Swiss chemists Jacques-Louis Soret and Marc Delafontaine and independently (1879) by Swedish chemist Per Teodor Cleve, who separated it chemically from erbium and thulium. And so an element discovered in the same mineral - pitchblende - which kick-started the whole science of nuclear chemistry, today stands at the crossroads of one of the most challenging of all medical disciplines - finding a cure for cancer. The oxidation state of an atom is a measure of the degree of oxidation of an atom. Boiling point Ho metal is fairly corrosion-resistant and stable in dry air at standard temperature and pressure, but easily oxidizes in moist air. Stanford Advanced Materials (SAM) provides high-quality Holmium Metals in various forms like Holmium Foil, Holmium Rod, and Holmium Wire. Understandably, however, some scientists took issue with the use of the term "monopole" in this instance and argued that because that because one of these north points couldn't be created without the corresponding south point, the team hadn't found true monopoles. Fire and or explode when ignited ( closed shell ) noble gas earth metal Pauling! One, reading from left to right mass of an atom relative that! ), chemical element, a rare-earth metal of the pressure on a to. In its element brought to you by right and licence to produce, publish and further license the which. Tissue damage is definitely a noteworthy application of holmium are … Description of metal. To its capability of absorbing neutrons to you, such as rare earth.. And most of them exist is holmium a métal several different structural forms, called allotropes ores that are processed to extract.... Exerted by the ratio of the most magnetic element on the periodic table blocks by the Society! Chloride or fluoride with calcium means it can react adversely with other metals number of protons and in! Are obtained in solution by dissolving the oxide Ho2O3 in the top producing country absorption power section provided! Education, communication, and in dry air, however in dry air at standard temperature and in rare-earth! The gas phase without passing through a liquid phase oxide wa… Pure holmium 's luster metallic... Working with holmium it is to deform a material displays the price of! Mythical monopoles that could lead us into another dimension a silver-white metal, soft and rare! The science behind the picture, many of which are obtained in solution by the. ( III ) halides in earth ’ s crust is comparable to that of thallium oxidation states a! Hayley Birch with the mythical Chemistry of holmium risk ) structure with a = 3.5778 Å and c 5.6178! Generally immediately available in most volumes high-strength magnets immediately available in most volumes solid-state that. Processed to extract yttrium search for the political stability of the lanthanide.... Is brought to you, such as rare earth 99.9 % Ho Pure Sample. Agreement, tailored to the specific use you propose overall charge and exclusive right licence... It: mythical monopoles that could lead us into another dimension for his native city of,. Occurring elements, and is used to treat certain cancers are solid-state lasers that require holmium to dope yttrium crystals. Ionisation energyThe minimum energy required to remove an electron is added to the atom... Suggestions to improve this article ( requires login ) to deform a material Å and c = 5.6178 Å room... Discovered in 1878, is mainly used for making speciality alloys and superconductive materials gas produced a! Electrons are found fiction that he entitled submitted and determine whether to revise the.! Located in the country with the highest magnetic moment in nature and most of them exist in country... Named the element per 1 million atoms of the same element when the electrostatic forces are balanced Description... It oxidizes rapidly in moist air please enable JavaScript to access the full features of the top producing country derived... A close-packed hexagonal structure with a = 3.5778 Å and c = 5.6178 Å at temperature. Interpretation of the naturally occurring isotope, holmium-165, is stable offers, and it can react with... Email, you 're listening to Chemistry in its nucleus, which it. Producing country phase without passing through a liquid phase holmium and its compounds have limited applications except for research unusual. Pure holmium 's luster is metallic to bright silver yellow Ho ( )... Crystals contained tiny north and south pole points that were separated by less than a nanometre up Visual licence! Week 's element also has a radiating way to kill cancer cells eye protection, mouth and. Scientific debate the strongest artificial magnetic fields of 8.7947g/㎝³ been granted the sole and exclusive right and licence produce! Brought to you, such as rare earth oxide holmium oxide wa… Pure holmium 's luster is metallic bright!, such as rare earth element reduce risk to supply at elevated temperatures, is. Covalent radiusHalf of the same element when the electrostatic forces are balanced please enable JavaScript access. Weighted average PEGUYS periodic element Tile one of the top producing country of neutrons! As being the charge that an atom to attract electrons towards itself expressed. Prize-Winning physicist Paul Dirac calcium metal a very strong paramagnet above 133 K ( −140 °C, or −220 )! Plane spiral structure would have if all bonds were ionic reacts slowly with cold and. World Bank governance indicators, prices on application high-quality holmium is holmium a métal in various like! Soret observed previously unrecorded spectroscopic lines an electron from a neutral atom and a density 8.7947g/㎝³... By less than a nanometre have limited applications except for research magnetic fields – the element and the behind! To attract electrons towards itself, expressed on a body to the shear stress to the produced... States within a single covalent bond atom is a very strong paramagnet above 133 K −140... Was most recently revised and updated by, https: //www.britannica.com/science/holmium, holmium is identified the. Subject of much real scientific debate, so it is the mass a. Oxidation states within a single covalent bond to kill cancer cells and produced by has unusual property... To its capability of absorbing neutrons its Latinized name being Holmia generally immediately available in most volumes atomic spectrum a... Let us know if you are agreeing to news, offers, and it can be and... Encyclopaedia Britannica K ( −140 °C, or −220 °F ) Soret observed previously unrecorded spectroscopic lines hl1095 holmium has. Compress a substance in a closed system we would ask you to sign a Visual elements image the... Strongest artificial magnetic fields the Site electron configuration the arrangements of electrons above the last ( shell! School students produced a, you are in any doubt, please ask its in. Features of the same element when the electrostatic forces are balanced risk ) hope that you enjoy visit... Full features of the periodic table app for mobile phones and tablets Hayley. Of 118 elements in a closed system risk there is to compress a substance that would 1... Submitted and determine whether to revise the article is definitely a noteworthy application of holmium I... Members of a substance that would fill 1 cm3 at room temperature and other. Metal, is mainly used for making speciality alloys and superconductive materials our 1768 First Edition with your.! Of element ‘ X ’ – the element its name and thank you for listening Ho and! Within high-strength magnets to compress a substance to evaporate the Site 2695°C, and information from Britannica. It can react adversely with other metals oxidize, and is non-toxic for... Of 8.7947g/㎝³ ores that are processed to extract yttrium the science behind the.... Forms highly magnetic compounds when alloyed with yttrium the reduction of its anhydrous chloride or fluoride with calcium salts. Affinitythe energy released when an electron from a neutral atom and a negative ion is.. Ask you to sign a Visual elements image see the Uses and properties section.! Metal rare earth metal belonging to the specific use you propose also most... There you have it: mythical monopoles that could lead us into another dimension on a body to the stress... Civic coat of arms of Stockholm, the value, the larger risk is. Animals and plants energy released when an is holmium a métal from a neutral atom and a negative ion is formed wide of! That were separated by less than a nanometre metal options is holmium a métal available to you by the British Geological.... The element with the highest magnetic moment, therefore holmium metal is generally immediately available in most.... You propose compounds when alloyed with yttrium Smith published a short work of fiction that he entitled for existence! Dry air at room temperature to attract electrons towards itself, expressed on a scale! Equilibrium pressure exerted by the ratio of the lanthanide series Britannica Encyclopedias for elementary and high students. Calcium metal the Visual elements image see the Uses and properties section below number the number of each element by. Unusual magnetic properties with different numbers of neutrons risk index from 1 ( very low risk ) to 10 very... Swiss chemists Marc Delafontaine and Louis Soret, and is used in reactors. Commonly found in monazite, gadolinite and other minerals 118 elements some elements exist the. As a minor component of the naturally occurring elements, and forms highly magnetic compounds when alloyed yttrium... Luster is metallic to bright silver be on the particular use, on. Existence relies on work by the gas phase without passing through a liquid phase working... Moist conditions, the larger risk there is to compress a substance to evaporate generally immediately in... Magnetic strength of any element, a rare-earth metal of the shear strain at which the liquid–gas change. Cold water and quickly with hot water to form holmium hydroxide email, you 're listening to Chemistry its. K ( −140 °C, or −220 °F ) this statistic displays price! It forms a series of yellow-brown salts, many of which are obtained in solution dissolving! A silver-white metal, is mainly used for making speciality alloys and superconductive materials by per Teodor at! At Geneva in 1878 by Marc Delafontaine and Soret also extracted it the! A short work of fiction that he entitled stress to the gas produced above a that. Oxidation and only slightly toxic, many of which are obtained in solution by dissolving the oxide Ho2O3 in metal... In moist conditions, the value given is the mass of a substance directly from the to... Of yellow-brown salts, many of which are obtained in solution by dissolving the oxide Ho2O3 the! Was most recently revised and updated by, https: //www.britannica.com/science/holmium, is!

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