what element is xe 6s2 4f14 5d7

Solve any question of Classification Of Elements And Periodicity In Properties with:-. [Xe] 6s2 4f10 [Xe] 6s2 4f14 5d7 [Ne] 3s2 3p1 Writing Electron Configurations. The ordering of the electrons in the ground state of multielectron atoms, starts with the lowest energy state (ground state) and moves progressively from there up the energy scale until each of the atoms electrons has been assigned a unique set of quantum numbers. [Rnl 7s2 Ra Ir ; Question: Match the condensed electron configuration with the proper element V A 1. Thechemical symbolfor Antimony isSb. In nuclear industry, especially natural and artificial samarium 149 has an important impact on the operation of a nuclear reactor. Look in Add a comment | 1 Answer Active Oldest Votes. Oxygenis a chemical element withatomic number8which means there are 8 protons and 8 electrons in the atomic structure. What is the difference between Xe and Ze? [Ne] 3s2 3p1 3. what is the name of the element in the ground state with the electron configuration of [Xe] 6s2 4f14 5d7? Discoverer: Marinsky, Jacob A. and Coryell, Charles D. and Glendenin, Lawerence. platinum (Pt), chemical element, the best known and most widely used of the six platinum metals of Groups 810, Periods 5 and 6, of the periodic table. Uranium is weakly radioactive because all isotopes of uranium are unstable, with half-lives varying between 159,200 years and 4.5 billion years. Solve problems easily using our calculators and solvers. The 6s and 6p electrons are in the outermost shell, and are therefore the valence electrons. Is it possible to use the Pottery Barn Card at Pottery Barn Kids? Neptuniumis a chemical element withatomic number93which means there are 93 protons and 93 electrons in the atomic structure. Fluorineis a chemical element withatomic number9which means there are 9 protons and 9 electrons in the atomic structure. Thechemical symbolfor Francium isFr. Knowledge of theelectron configurationof different atoms is useful in understanding the structure of the periodic table of elements. Titanium can be used in surface condensers. Radiumis a chemical element withatomic number88which means there are 88 protons and 88 electrons in the atomic structure. Nickel. Aufbau order -- [Xe] 6s1 4f14 5d10. Possible oxidation states are +3,4. Flashcards. 81 terms. 4f14 5d10 6p2. . It readily forms hard, stable carbides in alloys, and for this reason most of world production of the element (about 80%) is used in steel alloys, including high-strength alloys and superalloys. Hafniums large neutron capture cross-section makes it a good material for neutron absorption in control rods in nuclear power plants, but at the same time requires that it be removed from the neutron-transparent corrosion-resistant zirconium alloys used in nuclear reactors. element name and shorthand electrical config. Thechemical symbolfor Niobium isNb. But [Xe] 6s2 4f14 5d10 (or 4f14 5d10 6s2 - it doesn't matter which way round) is Hg (mercury). We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. Is this element paramagnetic or diamagnetic? What element is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1? Holmium is a relatively soft and malleable silvery-white metal. Atomic number: 28 Symbol:Ni Average atomic mass:59 Iridium is the most corrosion-resistant metal, and was used in the manufacture of standard lengths in meters in Paris, which is a mixture of 90% platinum and 10% iridium. Osmium. The element with the atomic number 17 is chlorine. Sodium is a soft, silvery-white, highly reactive metal. Discoverer: McMillan, Edwin M. and Abelson, Philip H. Discoverer: Glenn T. Seaborg, Joseph W. Kennedy, Edward M. McMillan, Arthur C. Wohl, Discoverer: Glenn T. Seaborg, Ralph A. James, Leon O. Morgan, Albert Ghiorso, Discoverer: Glenn T. Seaborg, Ralph A. James, Albert Ghiorso, Discoverer: Stanley G. Thompson, Glenn T. Seaborg, Kenneth Street, Jr., Albert Ghiorso, Discoverer: Stanley G. Thompson, Glenn T. Seaborg, Bernard G. Harvey, Gregory R. Choppin, Albert Ghiorso, Discoverer: Albert Ghiorso, Glenn T. Seaborg, Torbrn Sikkeland, John R. Walton, Discoverer: Albert Ghiorso, Torbjrn Sikkeland, Almon E. Larsh, Robert M. Latimer, Copyright 2023 Periodic Table | All Rights Reserved |. Helium [He] 1s2. The elemental metal is rarely found in nature, but once isolated artificially, the formation of an oxide layer (passivation) stabilizes the free metal somewhat against further oxidation. Po [Xe]4f14 5d10 6s2 6p5. So, an antimony atom with charge +2 has an electron configuration of 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p1. Bismuth is a brittle metal with a silvery white color when freshly produced, but surface oxidation can give it a pink tinge. Strontium (Sr) [Kr] 5s2. Our Privacy Policy is a legal statement that explains what kind of information about you we collect, when you visit our Website. what element is xe 6s2 4f14 5d7. The valence electrons are "leftover" electrons that don't fill a shell or satisfy the octet rule (except for noble gases) or 18-electron rule (transition metals). What can you do with a bunch of ghost peppers? Iridium is a chemical element with atomic number 77 which means there are 77 protons and 77 electrons in the atomic structure.The chemical symbol for Iridium is Ir. Osmium [Xe] 4f14 5d6 6s2. Rhodium is a rare, silvery-white, hard, corrosion resistant and chemically inert transition metal. What does element number 74 electron configuration end in? Berylliumis a chemical element withatomic number4which means there are 4 protons and 4 electrons in the atomic structure. Copper is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. In the periodic table, potassium is one of the alkali metals. Discoverer: Corson, Dale R. and Mackenzie, K. R. The actinide or actinoid series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium. Plutonium is an actinide metal of silvery-gray appearance that tarnishes when exposed to air, and forms a dull coating when oxidized. The element of this atomic number is lead, Pb. Lutetium is the last element in the lanthanide series, and it is traditionally counted among the rare earths. [Xe]6s 2 4f 3. S o here the total number of electron is 26 . Configuraciones electronicas. [Xe] 6s2 4f14 5d7 2. In nuclear industry gadolinium is commonly used as a neutron absorber due to very high neutron absorbtion cross-section of two isotopes 155Gd and 157Gd. In 1952, indium use in semiconductor devices began. Electron configuration of Iridium is [Xe] 4f14 5d7 6s2. Question: what is the name of the element in the ground state with the electron configuration of [Xe] 6s2 4f14 5d7? Elemental sulfur is a bright yellow crystalline solid at room temperature. What element is Xe 6s2 4f14 5d7? Niobiumis a chemical element withatomic number41which means there are 41 protons and 41 electrons in the atomic structure. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Americium is a transuranic member of the actinide series, in the periodic table located under the lanthanide element europium, and thus by analogy was named after the Americas. The first two columns on the left side of the periodic table are where thessubshells are being occupied. Nobeliumis a chemical element withatomic number102which means there are 102 protons and 102 electrons in the atomic structure. This Electron Configuration table gives the Electron Configuration of all the elements of periodic table . [Kr] 5s2 4d10 5p3. Rubidium is a soft, silvery-white metallic element of the alkali metal group, with an atomic mass of 85.4678. The cookies is used to store the user consent for the cookies in the category "Necessary". Like all elements with atomic number over 100, nobelium can only be produced in particle accelerators by bombarding lighter elements with charged particles. element name and shorthand electrical config. Atomic number:23 Symbol:V Average atomic mass: 50.9415 [Xe] 4f14 5d7 6s2 Transition metals. What is thought to influence the overproduction and pruning of synapses in the brain quizlet? What is the difference between Xe and Ze? 4f14 5d6 6s2 [Xe]. Xenon is a colorless, dense, odorless noble gas found in the Earths atmosphere in trace amounts. Your page rank: Total word count: 344. The most probable fission fragment masses are around mass 95 (Krypton) and 137 (Barium). Mendelevium is a metallic radioactive transuranic element in the actinide series, it is the first element that currently cannot be produced in macroscopic quantities. antimony atom It is also the most corrosion-resistant metal, even at temperatures as high as 2000 C. A freshly exposed surface of pure copper has a reddish-orange color. al. Thechemical symbolfor Thallium isTl. Technetium is the lightest element whose isotopes are all radioactive; none are stable. Mercury is a heavy, silvery d-block element, mercury is the only metallic element that is liquid at standard conditions for temperature and pressure. We also use third-party cookies that help us analyze and understand how you use this website. The chemical symbol for Helium is He. Palladiumis a chemical element withatomic number46which means there are 46 protons and 46 electrons in the atomic structure. A very heavy, precious, silver-white metal, platinum is soft and ductile and has a high melting point and good resistance to corrosion and chemical attack. Thechemical symbolfor Indium isIn. Its density is about 70% higher than that of lead, and slightly lower than that of gold or tungsten. Vanadium. Chemically, sulfur reacts with all elements except for gold, platinum, iridium, tellurium, and the noble gases. Einsteinium is the seventh transuranic element, and an actinide. Manganese is a metal with important industrial metal alloy uses, particularly in stainless steels. Potassiumis a chemical element withatomic number19which means there are 19 protons and 19 electrons in the atomic structure. Thechemical symbolfor Ruthenium isRu. See the Americium (Am) [Rn] 7s2 5f7. You wrote: [Xe] 6s2, 4f14, 5d9. What element has an electron configuration of xe 6s2 4f14 5d10 6p2? Therefor, it is Iridium. What element is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1? Thechemical symbolfor Dysprosium isDy. The Elements, 3rd edition. ; 3 What is 51 on the periodic table? Pure germanium is a semiconductor with an appearance similar to elemental silicon. Thechemical symbolfor Protactinium isPa. Protactinium is a dense, silvery-gray metal which readily reacts with oxygen, water vapor and inorganic acids. Cerium is a soft, ductile and silvery-white metal that tarnishes when exposed to air, and it is soft enough to be cut with a knife. what element is xe 6s2 4f14 5d7. What element has the electron configuration Kr 5s2 4d10 5p3? 4f14.Electron binding energies. Gold is a transition metal and a group 11 element. Thechemical symbolfor Sulfur isS. Sulfur is abundant, multivalent, and nonmetallic. Its properties are thus intermediate between those of chlorine and iodine. Thechemical symbolfor Germanium isGe. You also have the option to opt-out of these cookies. These cookies will be stored in your browser only with your consent. In some respects zinc is chemically similar to magnesium: both elements exhibit only one normal oxidation state (+2), and the Zn2+ and Mg2+ ions are of similar size. The periodic table is a tabular display of the chemical elements organized on the basis of their atomic numbers, electron configurations, and chemical properties. But opting out of some of these cookies may affect your browsing experience. Caesiumis a chemical element withatomic number55which means there are 55 protons and 55 electrons in the atomic structure. Thechemical symbolfor Barium isBa. . Element . >. Thorium is a naturally-occurring element and it is estimated to be about three times more abundant than uranium. Thoriumis a chemical element withatomic number90which means there are 90 protons and 90 electrons in the atomic structure. Your element has two more electrons (and two more protons) than Xe. Thechemical symbolfor Berkelium isBk. Polonium is a rare and highly radioactive metal with no stable isotopes, polonium is chemically similar to selenium and tellurium, though its metallic character resembles that of its horizontal neighbors in the periodic table: thallium, lead, and bismuth. Browse. Thechemical symbolfor Iridium isIr. Strontiumis a chemical element withatomic number38which means there are 38 protons and 38 electrons in the atomic structure. [Ar] 3d10 4s2. It is a noble metal and a member of the platinum group. By convention, they are written last in noble gas configuration. Oganesson. 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, Andrs Manuel (1801) and Sefstrm, Nils Gabriel (1830), Discoverer: Lecoq de Boisbaudran, Paul-mile, Discoverer: Ramsay, Sir William and Travers, Morris, Discoverer: Bunsen, Robert Wilhelm and Kirchhoff, Gustav Robert, Discoverer: Perrier, Carlo and Segr, Emilio, Discoverer: Reich, Ferdinand and Richter, Hieronymus, Discoverer: Mller von Reichenstein, Franz Joseph, Discoverer: Ramsay, William and Travers, Morris William, Discoverer: Kirchhoff, Gustav and Bunsen, Robert. Dysprosiumis a chemical element withatomic number66which means there are 66 protons and 66 electrons in the atomic structure. Thechemical symbolfor Palladium isPd. [Xe] 4f14 5d7 6s2: 78: Pt [Xe] 4f14 5d9 6s1: What is 1s2 2s2 2p6 3s2 3p6 4s2 3d6? n. [Xe] 6s2 4f14 5d7. 2019 periodic-table.org / see alsowww.nuclear-power.net. Alternatively, it may be easier to look at the listed subshells and determine which one is incomplete. Bismuth is a pentavalent post-transition metal and one of the pnictogens, chemically resembles its lighter homologs arsenic and antimony. References (Click the next to a value above to see complete citation information for that entry). The element is americium, a metal from the actinides. How do electron configurations affect properties and trends of a compound? Contents. [Xe]6s2 is Ernest Z. Bariums noble gas configuration. Tantalumis a chemical element withatomic number73which means there are 73 protons and 73 electrons in the atomic structure. Purchases, The Gotham Group (The Maze Runner) and EveryWhere Studios are working on a film based on Sharon Drapers inspiring young adult novel Out of My, Gina is an Italian-born Queen who means Queen. Gina is a name that has been used by parents considering girls baby names. Here's the physicist answer. nombre perodo, grupo estado a peso estados de conf. Discoverer: Scientists at Dubna, Russia (1964)/Albert Ghiorso et. Arsenic occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. [Ne] 3s2 3p1 3. Chlorine is a yellow-green gas at room temperature. electrnica bloque 20C 1atm atmico oxidacin 1 H Hidrgeno 1, s 1 gas 1.00794 1 1s1 2 He Helio 1, s 18 gas 4.002602 1s2 3 Li Litio 2, s 1 slido 6.941 1 1s2 2s1 4 Be Berilio 2, s 18 slido 9.012182 2 1s2 2s2 5 B Boro 2, p 13 slido 10.811 3 1s2 2s2 2p1 6 C Carbono 2, p 14 . element names in red are gases at room temperature element names in black are solids at room temperature Periodic Table of the Elements [Xe]6s 24f145d5 [Xe]6s24f 145d6 [Xe]6s2 5d7 [Xe]6s14f145d9 [Xe]6s14f145d10 [Xe]6s24f145d10 4f145d106p1 3 2 14 (i) [Kr] 5s1 4d10 (ii) [Xe] 6s2 4f14 5d7 (iii) [Ar] 4s2 3d10 4p4 (iv) [Kr] 5s1 4d4 (v) [Xe] 6s1 4f14 5d10 (vi) [Kr] 5s2 4d10 5p4 (b) Based on the electron configurations in part (a), which of the identified Browse. Thorium is moderately hard, malleable, and has a high melting point. Technetiumis a chemical element withatomic number43which means there are 43 protons and 43 electrons in the atomic structure. Pure radium is silvery-white alkaline earth metal. Iridiumis a chemical element with atomic number77which means there are 77 protons and 77 electrons in the atomic structure. Seleniumis a chemical element withatomic number34which means there are 34 protons and 34 electrons in the atomic structure. Cerium is the element that has the electron configuration of Xe 6s2 5d1 4f1. Search. Thechemical symbolfor Beryllium isBe. Holmiumis a chemical element withatomic number67which means there are 67 protons and 67 electrons in the atomic structure. ; 5 What element is Xe 6s2 4f14 5d9? The element lead has the electron configuration [Xe] 4f14 5d10 6s2 6p2. 77 Iridio 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d7. Osmium. The expected electron configuration for gold is is [Xe] 6s2 4f14 5d9 but it has been determined to be [Xe] 6s1 4f14 5d10. Bi [Xe]4f14 5d10 6s2 6p4. Xe is element 54. Pages [Xe] 4f14 5d7 6s2. What element has the electron configuration Kr 5s2 4d10 5p3? These cookies ensure basic functionalities and security features of the website, anonymously. Barium has the noble gas configuration [Xe]6s. [Xe] 6s2 is barium. The electron configuration 1s22s22p63s23p4 depicts what element is. 83. Telluriumis a chemical element withatomic number52which means there are 52 protons and 52 electrons in the atomic structure. What are some examples of electron configurations. Osmium [Xe] 4f14 5d6 6s2. [Xe] 4f14 5d6 6s2. The element lead has the electron configuration [Xe] 4f14 5d10 6s2 6p2. Chromium is a steely-grey, lustrous, hard and brittle metal4 which takes a high polish, resists tarnishing, and has a high melting point. Oxidation state 0 occurs for all elements it is simply the element in its elemental form. Its physical and chemical properties are most similar to its heavier homologues strontium and barium. Pt is an exception (as there are some). Pages . Osmium is the densest naturally occurring element, with a density of 22.59 g/cm3. Lanthanumis a chemical element withatomic number57which means there are 57 protons and 57 electrons in the atomic structure. antimony. Europium is a moderately hard, silvery metal which readily oxidizes in air and water. Thechemical symbolfor Uranium isU. 2) How many valence electrons in a species with one Cl, two O, and one unit negative charge a. Chemically, indium is similar to gallium and thallium. The electronic configuration is there to distract you: #Z=54+2+14+10+2=82#, and, therefore, the element is LEAD. PLLZ HELPPP 1s22s22p63s23p4 is a good example. Leadis a chemical element withatomic number82which means there are 82 protons and 82 electrons in the atomic structure. Europium is one of the least abundant elements in the universe. Berkelium is a member of the actinide and transuranium element series. brian kim, cpa clearvalue tax net worth . We have also distinguish between the possible and common oxidation states of every element. Sodium is an alkali metal, being in group 1 of the periodic table, because it has a single electron in its outer shell that it readily donates, creating a positively charged atomthe Na+ cation. Lead has the highest atomic number of any stable element and concludes three major decay chains of heavier elements. Classified as a noble gas, Xenon is a gas at room temperature.Xenon. A magnesium atom has 12 electrons, which means it has 12 electrons. This formula says that lead has all the electrons of xenon as well as the electrons listed after [Xe]. Like all alkali metals, lithium is highly reactive and flammable, and is stored in mineral oil. Thechemical symbolfor Potassium isK. Potassium was first isolated from potash, the ashes of plants, from which its name derives. Thalliumis a chemical element withatomic number81which means there are 81 protons and 81 electrons in the atomic structure. and Gay-Lussac, L.-J. All isotopes of radium are highly radioactive, with the most stable isotope being radium-226. It is one of the least reactive chemical elements and is solid under standard conditions. Thechemical symbolfor Aluminum isAl. [Rn]7s 2 5f 14 6d 10 7p 6 [note] Notes on the Electron Configuration of particular elements: Dubnium: Value is a guess based on periodic table trend. Iron is a metal in the first transition series. This formula says that lead has all the electrons of xenon as well as the electrons listed after [Xe]. Your element has two more electrons (and two more protons) than Xe. Start studying Periodic Table of Elements. What is the ground state electron configuration of the element germanium? Terbium is a silvery-white, rare earth metal that is malleable, ductile, and soft enough to be cut with a knife. Thechemical symbolfor Bismuth isBi. These elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare earth elements. Our Website follows all legal requirements to protect your privacy. The 6s and 6p electrons are in the outermost shell, and are therefore the valence electrons. What is XE 6s2 4f14 5d10 6p2? 06/16/2022 . Necessary cookies are absolutely essential for the website to function properly. Bariumis a chemical element withatomic number56which means there are 56 protons and 56 electrons in the atomic structure. https . Discoverer: Coster, Dirk and De Hevesy, George Charles, Discoverer: Elhuyar, Juan Jos and Elhuyar, Fausto, Discoverer: Noddack, Walter and Berg, Otto Carl and Tacke, Ida. Erbiumis a chemical element withatomic number68which means there are 68 protons and 68 electrons in the atomic structure. Pt [Xe]4f14 5d10 6s1. This fact has key implications for the building up of the periodic table of elements. [Xe] 4f14 5d7 6s2. Promethium is one of only two such elements that are followed in the periodic table by elements with stable forms. Carbon is one of the few elements known since antiquity. Thechemical symbolfor Tantalum isTa. Thechemical symbolfor Fluorine isF. Fluorine is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. what element is xe 6s2 4f14 5d9 Wearhouse For Sale St Paul, Mn, Jimenez Ja 22 Wood Grips, Labster Immunology Answers, Where To Watch The Outsiders Series, Who Is The Girl In The Girl Biting Lip Meme, Why Isn't Heart And Mind By Kodak On Apple Music, 2p Pusher Arcade Machine, Can Turtles Walk Backwards, Xfinity Dvr Setup, You wrote: [Xe] 6s2, 4f14, 5d9. To write an electron configuration: 1. Thechemical symbolfor Curium isCm. Element Atomic Number Element Symbol Element Electron Configuration; 76: Os [Xe] 4f14 5d6 6s2: 77: Ir [Xe] 4f14 5d7 6s2: 78: Pt [Xe] 4f14 5d9 6s1: 79: Au [Xe] 4f14 5d10 6s1: Titanium is a lustrous transition metal with a silver color, low density, and high strength. Ernest Z. Barium has the noble gas configuration [Xe]6s. PaullyD PaullyD 04/01/2016 Chemistry High School answered Which element has the electron configuration [Xe] 6s2 4f14 5d10 6p2? It does not store any personal data. It is the heaviest element that can be formed by neutron bombardment of lighter elements, and hence the last element that can be prepared in macroscopic quantities. You have been given the number of electrons, which for the neutral element is necessarily the same as the number of protons. Promethium (Pm) is a Lanthanide element with the atomic number 61. Dysprosium is used for its high thermal neutron absorption cross-section in making control rods in nuclear reactors, for its high magnetic susceptibility in data storage applications. Thechemical symbolfor Lawrencium isLr. Gallium. Thechemical symbolfor Silver isAg. element name and shorthand electrical config. Thorium metal is silvery and tarnishes black when exposed to air, forming the dioxide. Rhodiumis a chemical element withatomic number45which means there are 45 protons and 45 electrons in the atomic structure. All of the alkali metals have a single valence electron in the outer electron shell, which is easily removed to create an ion with a positive charge a cation, which combines with anions to form salts. It is a lanthanide, a rare earth element, originally found in the gadolinite mine in Ytterby in Sweden. Thechemical symbolfor Actinium isAc. It's not barium. What element is Xe 6s2 4f14 5d8? By convention, they are written last in noble gas configuration. Scandium is a silvery-white metallic d-block element, it has historically been sometimes classified as a rare-earth element, together with yttrium and the lanthanides. [Ne] 3s2 3p1 3. Writing Electron . Bromineis a chemical element withatomic number35which means there are 35 protons and 35 electrons in the atomic structure. Lawrencium is the final member of the actinide series. Similarly, thep blockare the right-most six columns of the periodic table, thed blockis the middle 10 columns of the periodic table, while thef blockis the 14-column section that is normally depicted as detached from the main body of the periodic table. Can you return Pottery Barn Kids to Pottery Barn. [Xe] 4f14 5d10 6s2 6p2. We add the proceeding electrons, which is now a total of 82. We use cookies to ensure that we give you the best experience on our website. Electron Configurations. Thechemical symbolfor Tellurium isTe. Cobaltis a chemical element withatomic number27which means there are 27 protons and 27 electrons in the atomic structure. Sulfuris a chemical element withatomic number16which means there are 16 protons and 16 electrons in the atomic structure. 81 terms. Elemental rubidium is highly reactive, with properties similar to those of other alkali metals, including rapid oxidation in air. Magnesiumis a chemical element withatomic number12which means there are 12 protons and 12 electrons in the atomic structure. This cookie is set by GDPR Cookie Consent plugin. The electronic configuration is there to divert your attention: Z=542+14102=82, so the element is LEAD. The metal is found in the Earths crust in the pure, free elemental form (native silver), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite.



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