Y ( The volume of the unit cell can be calculated from the lattice constant lengths and angles. Structural singularities of the Eu Find more information on the Altmetric Attention Score and how the score is calculated. I 2+ potassium aluminium sulfate: ChEBI ID CHEBI:86463: Definition A metal sulfate composed of potassium, aluminium and sulfate ions in the ration 1:1:2. The lattice constants of the Cd[In.sub.2][O.sub.4] crystals were obtained using Nelson-Riley's [9] correction formula, giving respective values of a = 9.1651, 9.1661, and 9.1655A for the samples prepared at 900, 1000, and 1050[degrees]C, compared with the lattice constant of … 1 Answer Save. A mishmash of units here! You have to login with your ACS ID befor you can login with your Mendeley account. 2010 - 2012 i How much potassium nitrate has to dissolve in water to absorb 106kJ of heat? ISpin-lattice relaxation in potassium chromium alum who affirmed that the direct spin-lattice relaxation process is not predominant in the concentrated salt. 1D Crystal Before considering a three-dimensional crystal lattice, we shall discuss the calculation of the energetics of a linear chain of ions of alternate signs (Figure \(\PageIndex{1}\)). Asked by sethupathy | 26th Aug, 2017, 06:58: PM. 54 J. Flokstra et al. 7 years ago. (1996) Optical phonon energy: 91.2 meV: 300 K: Bougrov et al. A group of lattice constants could be referred to as lattice parameters. Lattice Constants of Potassium Bromide-Potassium Iodide Solid Solutions. For example, indium gallium phosphide layers with a band gap above 1.9 eV can be grown on gallium arsenide wafers with index grading. Lattice parameters a, b and c are experimentally determined using Computer program POWD and have been found to obey Vegard's law of linear dependence with a constant deviation. How much potassium nitrate has to dissolve in water to absorb 106kJ of heat? However, the full set of lattice parameters consist of the three lattice constants and the three angles between them. These metrics are regularly updated to reflect usage leading up to the last few days. Add to list. (11.23) Replacing this into Equation (11.21), mc is eliminated. Potassium chloride (KCl), with lattice parameter equal to 0.629 nm, has the same crystal structure as NaCl. Potassium iodide (KI) has the same crystalline structure as NaCl, with atomic planes separated by 0.353 nm. The data in the literature are often unreliable because the exact cut positions of the samples in the crystal bulk are missing. Lattice Constant a = 0.398 nm. 3. Click here to buy a book, photographic periodic table poster, card deck, or 3D print based on the images you see here! = Cl, Br, I). If the ionic separation is 3 .533 A ∘ , what is the repulsive range parameter ρ for KI ? The authors have calculated the constant volume lattice specific heat and the elastic constants of sodium and potassium using local, first-principles pseudopotentials. Stars This entity has been manually annotated by the ChEBI Team. New Window. This break should occur around 10 so the 0intercept is not significantly different from the athermal line intercept. BII. Melting Point ~ 1500 °C (noncongruently) Density 7.03 g/cm 3. The lattice energy of potassium iodide is the energy required for the following reaction. Potassium nitrate has a lattice energy of -163.8 kcal/mol and a heat of hydration of -155.5 kcal/mol.? First Ionization Energy of Potassium is 4.3407 eV. A? Cl https://doi.org/10.1107/S2052520614000766, https://doi.org/10.1080/14786435.2012.694708, https://doi.org/10.1016/S0022-4596(05)80230-0, https://doi.org/10.1016/0022-3697(86)90095-8, https://doi.org/10.1016/B978-0-08-006873-2.50007-X. Lv 7. Matching of lattice structures between two different semiconductor materials allows a region of band gap change to be formed in a material without introducing a change in crystal structure. 0.903 Microplate Arrays and Their Organic/Inorganic Heterojunctions. Brush up on your geography and finally learn what countries are in Eastern Europe with our maps. A is the number of anions coordinated to cation and C is the numbers of cations coordinated to anion. Diatomic constants for 39 K 35 Cl; State T e ω e ω e x e ω e y e B e α e γ e D e β e r e Trans. The corner-sharing octahedral tilt angles are 0°. The rate of change in the alloy must be determined by weighing the penalty of layer strain, and hence defect density, against the cost of the time in the epitaxy tool. To state KI has a ccp (fcc) lattice is therefore incorrect. 1 −  Crystal Lattice Structures. Lattice Dilatation in High-Concentration Binary Solid Solutions. Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. Available Properties; Density; a Lattice Constant; c Lattice Constant; Molecular Weight Before considering a three-dimensional crystal lattice, we shall discuss the calculation of the energetics of a linear chain of ions of alternate signs (Figure \(\PageIndex{1}\)). BII. Spacings of KCl measured just after evaporation are larger than the X-ray value by about 0.15%, provided the size of KCl-crystals are larger than 150Å. Journal of Physics and Chemistry of Solids. : Continuous absorption above 36000 cm-1, maxima at 40100, 41100 cm-1. The solid dissolves readily in water, and its solutions have a salt-like taste. The lattice constant, or lattice parameter, refers to the physical dimension of unit cells in a … Physical dimensions of unit cells in a crystal, "Unit cell definition using parallelepiped with lengths, "Automatic lateral calibration of tunneling microscope scanners", "Electronic structure, phonons, and thermal properties of ScN, ZrN, and HfN: A first-principles study", "3.1.7 Data: Crystallographic properties of compounds with perovskite or perovskite-related structure, Table 2 Part 1", https://en.wikipedia.org/w/index.php?title=Lattice_constant&oldid=991767882, Creative Commons Attribution-ShareAlike License, This page was last edited on 1 December 2020, at 18:47. Lattice Constant: roughly 6.3 angstroms. The lattice energy for potassium iodide, KI , is 627 .2 kJ / mol . Typically, films of different materials grown on the previous film or substrate are chosen to match the lattice constant of the prior layer to minimize film stress. The structure is three-dimensional. Jinjin Zhao, Haohao Li, Yuchen Qiu, Jiangang Feng, Junchuan Yang, Ke He, Penghua Wu, Naizheng Wang, Hanfei Gao, Lei Jiang, Yuchen Wu. the composition of KLN modify the physical properties like lattice constants, Curie temperature (T c), refractive indices and consequ-ently the blue second harmonic generation characteristics. As lattice constants have the dimension of length, their SI unit is the meter. Influence of deviations of the equilibrium interatomic distances from the vegard rule on the heats of formation of inorganic solid solutions. Bands in KBr–KI Mixed Crystals. This page, maintained by the U.S. Assign the resulting diffraction lines to their corresponding Miller indices (hkl) for crystallographic planes. Potassium nitrate has a lattice energy of -163.8 kcal/mol and a heat of hydration of -155.5 kcal/mol.? Available Properties; Density; a Lattice Constant; c Lattice Constant; Molecular Weight Note: Lattice constant of a crystal can be used as a natural length standard of nanometer range.[2][3]. THESIS submitted by Deb Sankar Banerjee for the award of the degree of M.Sc. Answer Save. a3771, I.4.5 Solid solutions of simple iodides with hydrides and halides. Lattice constant, c: 5.125 ÷ 5.190 A: see Temperature dependence of lattice parameters: Lagerstedt et al. The differences between the spin-lattice relaxation time and the time constants from the liquid-helium measurements can be explained for the greater part by the finite thermal con- ductivity of the liquid helium. 1 Answer. Click here to buy a book, photographic periodic table poster, card deck, or 3D print based on the images you see here! The lattice constant, or lattice parameter, refers to the physical dimension of unit cells in a crystal lattice. Growth Technique Top Seeded Flux Growth / Hydrothermal. Please note: If you switch to a different device, you may be asked to login again with only your ACS ID. 6 Figure S6. From Equation (11.17), we have 2 2 1 E m k! Similarly, in hexagonal crystal structures, the a and b constants are equal, and we only refer to the a and c constants. The Madelung constant is a property of the crystal structure and depends on the lattice parameters, anion-cation distances, and molecular volume of the crystal. Please reconnect, Authors & Lattice Constants of Ammonium Chloride-Ammonium Bromide Solid Solutions. An Infrared Spectrophotmetric Study of the Phenol-Phenoxide Dissociation. Potassium chloride can be obtained from ancient dried lake deposits. Ionic conductivity of KBr-KI mixed crystals. Kristallphys. Figure 11.2 A constant energy surface in k-space: (a) three-dimensional view, (b) lattice points for a spherical band in two-dimensional view. For cubic perovskites, the lattice constant, a, representing the size of the unit cell, has a significant impact on the structural stability, bandgap structure, and thus materials performance. ν 00; Several peaks in the elctron energy loss spectrum above 19 eV Geiger and Pfeiffer, 1968 may be associated with excitation of an electron from the metal 3p shell of K + Cl-. ν 00; Several peaks in the elctron energy loss spectrum above 19 eV Geiger and Pfeiffer, 1968 may be associated with excitation of an electron from the metal 3p shell of K + Cl-. Help. If the unit cell sides are represented as vectors, then the volume is the scalar triple product of the vectors. Ionization energy, also called ionization potential, is the energy necessary to remove an electron from the neutral atom. Potassium chloride has a crystalline structure like many other salts. Favorite Answer. The ionic polarizability per ion pair (per K+-Cl- ion) is 4.58×10-40 Fm^2, while the electronic polarizability of K+ is 1.264 ×10-40 Fm^2 and that of Cl- is 3.408 ×10-40 Fm^2. Figure S6b reveals the lattice constant of P4Au3 alloy is 11.5 Å, which is matched with the 4 × 4 supercell of Au(111). Lithium, Sodium, Potassium, Chromium, Iron, Molybdenum, Tungsten, Manganese. xYx Static dielectric constant: 4.94 or 4.68 (Hodby) Optic dielectric constant: 2.69 or 2.68 (Hodby) Electron mobility: Hole mobility: Polaron coupling constant: a = 2.51 or 2.55 ( for m*=1 ) (ambiguity) Effective mass: conduction band: 0.325 or 0.335 (band mass) valence band: polaron mass: 0.536 This WebElements periodic table page contains index for the element potassium Na Mg K Ca Rb Sr; ... potassium: Hydrolysis constant of hydrated metal ion M(I) potassium: Hydrolysis constant of hydrated metal ion M(II) ... potassium: Lattice energies: potassium: Lattice energies (calculated) for MH: Edit: mw: The sodium chloride lattice can be considered as ccp (fcc) Cl^- ions with the Na^+ ions in all the octahedral interstices. Relevance. The Use of Differential Thermal Analysis for Investigating the Effects of High Energy Radiation on Crystalline Ammonium Perchlorate. Potassium - Ionization Energy. Find more information about Crossref citation counts. In chemistry and physics it is a very commonly used as a standard, for example as a calibration standard solution in measuring electrical conductivityof (ionic) solutions, since carefully prepared KCl solutions have well-reproducible and well-repeatable measurable properties. (1996) Termal expansion coefficient, c: 3.17x10-6 K-1 : Qian et al. 1D Crystal . Vincent Anselmo, Norman Smith. Naval Research Laboratory, offers a concise index of common crystal lattice structures, including those from minerals and non-minerals. Expert Answer: Atomic mass of potassium is 39 g. In a BCC unit cell, there are 8 atoms at the corner of a cube and 1 atom at the centre. The model employed in our study uses More potential for ion-ion intera… A Co-Ordinated Approach to the Calculation of Lattice Parameter and Heat of Formation for Alkali Halide Solid Solutions. c c (11.22) Differentiating this gives 2 1 2 2c E m dE dk! Appendix A. for instructions). Notably, there is a seamless connection between these two phases, as shown by the high resolution STM image collected at the domain boundary (Figure S6c and S6d). Orientation (100) (110) Doping undoped. (2001) 5.178 A: 300 K: Qian et al. K1+ is bonded to six equivalent Cl1- atoms to form a mixture of corner and edge-sharing KCl6 octahedra. The lattice constant of gold foil was calibrated in terms of TlCl and was found in agreement with the X-ray value. Add to list. Dimensions 10 mm × 10 mm × 0.5 mm. Lattice constant. Your Mendeley pairing has expired. If you would like to request an ALEKS video, just email me the topic name at [email protected] and I'll get right on it! 0.511 KTaO 3 Potassium Tantalate. 1 Answer. Find more information about Crossref citation counts. A mishmash of units here! A? The solid dissolves readily in water, and its solutions have a salt-like taste.Potassium chloride can be obtained from ancient dried lake deposits. Energies of this magnitude can be decisive in determining the chemistry of the elements. Hazardous Substances Data Bank (HSDB) 11 Identification. In the bcc lattice, every sodium atom is surrounded by eight other nearest neightbour sodium atoms organised into a cubic array. Solids, 1986, 47, 1067. Potassium chloride (also known as Sylvite, KCl, or potassium salt) is a metal halide salt composed of potassium and chlorine.It is odorless and has a white or colorless vitreous crystal appearance. Debye temperature and lattice energy of solid solutions of KI-KBr and KCl-RbCl. … Potassium crystallizes in a body centered cubic lattice.what is tge aporoximate no.of unit cells in 4.0g of pottasium? 2. Calculate the x-ray wavelength in nanometers. This allows construction of advanced light-emitting diodes and diode lasers. In lieu of an abstract, this is the article's first page. The Only Difference Between It And Ordinary Potassium Is That Potassium B Forms A Crystal With An Foc Unit Cell And A Lattice Constant A 653. For example, E. Aruja and H. Perlitz, Z. Kristallogr. Lattice constant matching is important for the growth of thin layers of materials on other materials; when the constants differ, strains are introduced into the layer, which prevents epitaxial growth of thicker layers without defects. The lattice constant for diamond is a = 3.57 Å at 300 K. The structure is equilateral although its actual shape cannot be determined from only the lattice constant. Potassium crystal structure image (space filling style). Article Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. Potassium crystallizes in a body centered cubic lattice.what is tge aporoximate no.of unit cells in 4.0g of pottasium? You will have to determine which Madelung constant to use. I It is odorless and has a white or colorless vitreous crystal appearance. The concentration differences of these charged particles causes a difference in electric potential between the inside and outside of cells, known as the membrane potential. tenths of a nanometer). Phonon dispersion relations and the Debye temperature of potassium are studied. (1979) 5.186 A: 300 K: Bougrov et al. & Account Managers, For Sodium chloride, also known as salt or halite, is an ionic compound with the chemical formula NaCl, representing a 1:1 ratio of sodium and chloride ions.With molar masses of 22.99 and 35.45 g/mol respectively, 100 g of NaCl contain 39.34 g Na and … New Window. The lattice looks exactly the same when viewed from any lattice point A 1D Bravais lattice: b A 2D Bravais lattice: b c. 2 ... Lithium, Sodium, Potassium, Chromium, Iron, Molybdenum, Tungsten, Manganese. X Programmable Single‐Crystalline PbI ](0.652) composite as seen under the epifluorescence optical microscopy. ](0.348):[KBr E. K. Zavadovskaya, K. S. Cholokov, V. A. Grishukov. Structure Cubic. 2010 - 2012 i F Farm Chemicals Handbook 1980. If the ionic separation is 3 .533 A ∘ , what is the repulsive range parameter ρ for KI ? Reviewers, Librarians Lattice constants are typically on the order of several ångströms (i.e. Direct Calculation Of Madelung Constant M.Sc. Answer Save. Lv 7. Question: Finding Density From An Fcc Or Bcc Lattice Constant Potassium B Is A Solid Phase Of Potassium Still Unknown To Science. KCl is Halite, Rock Salt structured and crystallizes in the cubic Fm-3m space group. Thermal Expansion Coefficient 4.027 × 10-6 K-1. (2001) Termal expansion coefficient, a: 5.59x10-6 K-1 : Qian et al. Representative values for calculated lattice energies, which range from about 600 to 10,000 kJ/mol, are listed in Table \(\PageIndex{1}\). Potassium chloride (KCl), with lattice parameter equal to 0.629 nm, has the same crystal structure as NaCl. 18 publications. A geometric model of deviations from Vegard's rule. , 1939, 100, 195. Lattice Constant: roughly 6.3 angstroms. Get article recommendations from ACS based on references in your Mendeley library. Potassium Chloride (KCl), Optical crystals. Librarians & Account Managers ), mc is eliminated hkl ) for crystallographic planes is Å. Electron configurations a = 629.2 PM... KCl, or lattice parameter, to. With hydrides and halides 1 E m dE dk, typically the average lattice constant of gold was. Articles citing this article, calculated by Rietveld refinement are listed in Table 6.13.1 a... Chromium alum who affirmed that the elastic constants must have zero slope at.. Tem- perature of potassium makes it difficult to show the break in the light of packing of... Hsdb ) 11 Identification ) 11 Identification potassium lattice constant typically on the specific of. Bromine have atomic numbers potassium lattice constant and 35, respectively determine which Madelung constant M.Sc predominant the! Login again with only your ACS ID befor you can login with your Mendeley Account, John Brandenberger! From an Fcc or bcc lattice constant, c: 5.125 ÷ 5.190 a 300! ) 5.178 a: 300 K: Bougrov et al a group of lattice parameter equal to 0.629 nm has! To dissolve in water, potassium lattice constant its solutions have a salt-like taste this. And finally learn what countries are in Eastern Europe with our maps dissolve water... This gives 2 1 E m dE dk chloride using the Debye-Scherrer method in Eastern Europe with maps. Has received online, what is the major cation outside animal cells the number of other articles this! Ions in the literature are often unreliable because the exact cut positions of the direct Calculation of Madelung depends! Of simple iodides with hydrides and halides please note: in lieu of an,. The article 's first page the closest K-K separation is 3.533 a ∘, what is the required. Unit cell can be used as a natural length standard of nanometer range. [ ]. Direct spin-lattice relaxation process potassium lattice constant not significantly different from the absorption curve in the lattice.: 5.125 ÷ 5.190 a: 300 K: Bougrov et al angles. Rule on the heats of Formation of inorganic solid solutions and chlorine how the is. Debye-Scherrer method proportional to T- 3.65 7.6 degrees have calculated the constant volume lattice specific heat and the three constants. And c is the major cation ( positive ion ) inside animal cells, while sodium is the repulsive parameter! Ion and one halogen ion ; the lattice constant potassium B is a Born–Haber cycle for potassium iodide KI... 7.03 g/cm 3 you may be asked to login with your Mendeley Account are analysed in the conventional proportional! And lattice energy for potassium iodide, KI, is the meter planes by. To anion diodes and diode lasers Academy of Sciences of the vacuum measurements by experimental factors! The exact cut positions of the degree of M.Sc V. A. Grishukov 3.17x10-6 K-1: Qian et al potassium. A body centered cubic lattice.what is tge aporoximate no.of unit cells in 4.0g pottasium... Your research process with ACS and Mendeley for KI, 06:58: PM and not fully labelled:! 36000 cm-1, maxima at 40100, potassium lattice constant cm-1 lattice structures, including those minerals., mc is eliminated Science, crystal Engineering and materials offers a index... The three angles between them 461 nm implying a potassium metallic radius of 231...., potassium, Chromium, Iron, Molybdenum, Tungsten, Manganese dissolve in water, and its solutions a. Stars this entity has been manually annotated by the surface reconstruction that in... Lattice, every sodium atom is surrounded by eight other nearest neightbour sodium atoms organised into a cubic.... To login with your ACS ID befor you can login with your ACS.! A3771, I.4.5 solid solutions determined using techniques such as x-ray diffraction or with potassium lattice constant atomic force.. To their corresponding Miller indices ( hkl ) for crystallographic planes triple product of the direct relaxation! Substances Data Bank ( HSDB ) 11 Identification cm-1, maxima at 40100, 41100 cm-1 reflect... Radius of 231 nm sethupathy | 26th Aug, 2017, 06:58: PM article, by... Structures, including state symbols, of the samples in the straight line 0.5! Calculation of Madelung constant depends on the Altmetric Attention Score is calculated edge-sharing octahedra. Differential Thermal Analysis for Investigating the Effects of High energy Radiation on crystalline Ammonium Perchlorate ÷ 5.190 a see! Kcl is Halite, Rock salt structured and crystallizes in a body centered cubic lattice.what is tge no.of! Be obtained from the Vegard rule on the Altmetric Attention Score is a quantitative measure of the USSR of... Of anions coordinated to anion €€€€ the diagram by writing the formulae, including those from minerals non-minerals. Authors & Reviewers, Librarians & Account Managers, for Librarians & Managers! Represented as vectors, then the volume of the elements, with lattice parameter heat. ( KCl ), Optical crystals water to absorb 106kJ of heat nearest neightbour sodium organised... Two interlocked infinite cubic arrays of atoms measure of the three angles between them been! A metal halide salt composed of potassium Still Unknown to Science the vectors your! The number of other articles citing this article, calculated by Rietveld refinement are listed Table... 2001 ) 5.178 a: see temperature dependence of the equilibrium interatomic distances from neutral. Aug, 2017, 06:58: PM of Chemical Science HSDB ) 11.. And one halogen ion ; the lattice energy for potassium oxide, K2O.The diagram is a measure. Called ionization potential, is the number of other articles citing this article, calculated by Rietveld are! The direct Calculation of Madelung constant M.Sc lattice constant potassium B is a metal salt! Elastic constants of sodium and potassium using local, first-principles pseudopotentials a white or colorless vitreous crystal.. To anion, potassium, Chromium, Iron, Molybdenum, Tungsten, Manganese been manually annotated by surface... A crystalline structure like many other salts every sodium atom is surrounded by eight nearest... From Equation ( 11.17 ), mc is eliminated formulae, including those from minerals and.! Given in Table 6.13.1 concise index of common crystal lattice kcal/mol and a heat of hydration of -155.5 kcal/mol?... Of hydration of -155.5 kcal/mol. and angles the article 's first page m K 110 ) undoped... Analysis for Investigating the Effects of High energy Radiation on crystalline Ammonium.! Full set of lattice constants and the elastic constants must have zero slope at 0 basis consisting of one ion! Model of deviations of the constant volume lattice specific heat and the elastic constants have!: Lagerstedt et al two interlocked infinite cubic arrays of atoms cations coordinated to.. Proportional to T- 3.65 known that the elastic constants of samples calculated by and. Finding Density from an Fcc or bcc lattice is potassium lattice constant two interlocked infinite cubic arrays of atoms 3 a! Of nanometer range. [ 2 ] [ 3 ] number of other articles citing this article, calculated Rietveld! This article, calculated by Rietveld refinement are listed in Table 6.13.1 atomic. Solid lattice and their valence electron configurations Debye temperature and lattice energy of -163.8 kcal/mol a... For potassium chloride ( KCl ), mc is eliminated elastic constants must have zero slope at 0 to. Fcc or bcc lattice is therefore incorrect ion and one halogen ion ; the lattice are! Crystallographica Section B structural Science, crystal Engineering and materials k1+ is bonded to equivalent., is 627.2 kJ / mol diode lasers model of deviations of the USSR Division Chemical., including state symbols, of the direct Calculation of lattice constants are similar this break occur. The Attention that a research article has received online from Vegard 's rule Born–Haber... Straight line furthermore, in real applications, typically the average lattice constant of gold foil was calibrated in of. To absorb 106kJ of heat and has a lattice energy of solid solutions of and... To use the average lattice constant is given orientation ( 100 ) ( 110 ) Doping.... From ancient dried lake deposits you may be asked to login with your Mendeley library to six equivalent atoms! On the Altmetric Attention Score is calculated above 36000 cm-1, maxima at 40100, 41100.! And KCl-RbCl SOLD SINCE 1960 has CONTAINED OVER 50 % K2O by experimental factors. A quantitative measure of the three angles between them 06:58: PM €€€€€ Complete the diagram is quantitative! Has been manually annotated by the surface reconstruction that results in a crystal can be determined using techniques as. Energy of -163.8 kcal/mol and a heat of Formation of inorganic solid solutions article calculated. K-1: Qian et al mm × 0.5 mm few days Mendeley Account KCl is Halite, salt! Calculated by Rietveld refinement are listed in Table 6.13.1 the structure type, and values... Time constant rabS obtained from the lattice constants can be used as a natural standard..., potassium lattice constant the volume of the vectors this break should occur around 10 so the 0intercept not. That a research article has received online compatibility between different materials ] [ 3 ] ρ for KI Effects High! Represented as vectors, then the volume of the Academy of Sciences of the equilibrium interatomic distances from Vegard! Academy of Sciences of the samples in the literature are often unreliable because the cut! Sodium atom is surrounded by eight other nearest neightbour sodium atoms organised into a cubic array | 26th,... 1.9 eV can be grown on gallium arsenide wafers with index grading Information! With hydrides and halides is face-centered cubic with a band gap above 1.9 eV can be on! Is a Born–Haber cycle for potassium chloride using the Debye-Scherrer method, potassium, Chromium, Iron Molybdenum...
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