Politics and Nationalism in the Naming of Chemical Elements
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Evolution and Understanding of the D-Block Elements in the Periodic Table Cite This: Dalton Trans., 2019, 48, 9408 Edwin C
Dalton Transactions View Article Online PERSPECTIVE View Journal | View Issue Evolution and understanding of the d-block elements in the periodic table Cite this: Dalton Trans., 2019, 48, 9408 Edwin C. Constable Received 20th February 2019, The d-block elements have played an essential role in the development of our present understanding of Accepted 6th March 2019 chemistry and in the evolution of the periodic table. On the occasion of the sesquicentenniel of the dis- DOI: 10.1039/c9dt00765b covery of the periodic table by Mendeleev, it is appropriate to look at how these metals have influenced rsc.li/dalton our understanding of periodicity and the relationships between elements. Introduction and periodic tables concerning objects as diverse as fruit, veg- etables, beer, cartoon characters, and superheroes abound in In the year 2019 we celebrate the sesquicentennial of the publi- our connected world.7 Creative Commons Attribution-NonCommercial 3.0 Unported Licence. cation of the first modern form of the periodic table by In the commonly encountered medium or long forms of Mendeleev (alternatively transliterated as Mendelejew, the periodic table, the central portion is occupied by the Mendelejeff, Mendeléeff, and Mendeléyev from the Cyrillic d-block elements, commonly known as the transition elements ).1 The periodic table lies at the core of our under- or transition metals. These elements have played a critical rôle standing of the properties of, and the relationships between, in our understanding of modern chemistry and have proved to the 118 elements currently known (Fig. 1).2 A chemist can look be the touchstones for many theories of valence and bonding. -
Abound to Each Other
PAGE 12 THE RETRIEVER FEATURES October 31,-1995 Pub Parades Pizza and Pals Tim Marshallsay moment it is MTV. A few watch with by Constable called "Haywain and Retriever Contributor interest as someone unknown brings Fries" hidden somewhere. A sign us his latest release, which, although warns of an impending price increase There are deafening howls of unintelligible, appears to be about for certain items that came back into laughter from the front of the room sex, judging by the number of but- effect back in August. The sign stands where the TV hangs, as the huge, tocks on the screen — all spinning at sentry by the stacks of trays (card- inanely grinning woman glides a rate that would baffle Kepler. board or plastic), invariably wet. through the studio audience as if on Noise begets noise, so those shout- The Pub's staff stand in front of the wheels. She is clad in a red, crushed ing to make themselves heard are, at griddle, and behind the glass counter velvet dress that conceals her legs the same time, drowning out some- — it's panes as steamy with conden- and seems to eliminate friction. My one else. Conversations are staccato sation as an English bathroom in grandmother had an armchair with fragments, with lives of their own: January. The grill staff have a thank- the same pattern, material, size, and "... didn't do the homework ..."; "... less task that they handle with great shape. This is Carnie. This is free should've pulled Benitez while he aplomb. Students in a hurry, and fac- hour. -
Rainbow 18C PT 0318 Ad Ge訂正
1 18 1 H 2 He 1.008 4.003 hydrogen Rainbow Periodic Table helium 2.20 +1 guide☆ 1 with Quad electron data atomic number 82 Pb symbol 1 atomic weight 207.2 categories(Wikipedia): 2 -1 2 name 13 14 15 16 17 lead known oxidation state Alkali metals Post-transition metals 3 Li 4 Be electronegativity 2.33 +4 highest Alkaline earth metals Metalloids 5 B 6 C 7 N 8 O 9 F 10 Ne 14 [ ]:common Transition metals Reactive nonmetals 6.941 9.012 Quad electron data 10.81 12.01 14.01 16.00 19.00 20.18 lithium beryllium 2 10 [ ]:uncommon Lanthanides Noble gases boron carbon nitrogen oxygen fluorine neon 14 10 2 2 2 2 0.98 +1 1.57 +2 [Xe] 4f 5d 6s 6p [Xe] -4 lowest Actinides Unknown chemical properties 2.04 +3 2.55 +4 3.04 +5 3.44 +2 3.98 -1 shells 1 2 3 4 5 6 1 2 l=3 2 2 2 2 2 2 [He] +1 [He] +1 n=1 n=2 n=3 n=4 n=5 n=6 n=7 n=8 [He] -5 [He] -4 [He] -3 [He] -2 [He] -1 [He] f 11 Na 12 Mg orbitals l=1 p d l=2 13 Al 14 Si 15 P 16 S 17 Cl 18 Ar 22.99 24.31 s 26.98 28.09 30.97 32.07 35.45 39.95 sodium magnesium K L M N O P Q R aluminium silicon phosphorus sulfur chlorine argon 0.93 +1 1.31 +2 l=0 nickname*: 'Ketchup' 'MustardYellow' 'Ocean Blue' 'Quin Violet' 1.61 +3 1.90 +4 2.19 +5 2.58 +6 3.16 +7 3 'Ladyfinger' 'NatureGreen' 'Pansy Blue' 'Ricecake' * suggested by Valery Tsimmerman 1 2 3 4 5 6 1 2 2 2 2 2 2 2 [Ne] -1 [Ne] +1 3 4 5 6 7 8 9 10 11 12 [Ne] -2 [Ne] -4 [Ne] -3 [Ne] -2 [Ne] -1 [Ne] 19 K 20 Ca 21 Sc 22 Ti 23 V 24 Cr 25 Mn 26 Fe 27 Co 28 Ni 29 Cu 30 Zn 31 Ga 32 Ge 33 As 34 Se 35 Br 36 Kr 39.10 40.08 44.96 47.87 50.94 52.00 54.94 55.85 58.93 58.69 63.55 -
MEDICA Management & Spezial Krankenhaus Zeitung Für Entscheider Im Gesundheitswesen
MEDICA Management & Spezial Krankenhaus Zeitung für Entscheider im Gesundheitswesen Oktober · 10/2011 · 30. Jahrgang Twittern und Co. für mehr Patienten „Time is brain“ Marktübersicht POCT Themen Facebook, Twitter und Google+ sind für Bei ersten Symptomen eines Schlaganfalls Was ist neu, was ist besser? Messtechnisch Gesundheitsökonomie Unternehmen keine Trends, sondern ernst- muss der Patient so schnell wie möglich in ausgereifte, moderne Geräte für die POCT Krankenhaus und Markenimage 5 zunehmenden Marketing-Instrumente. Auch eine spezialisierte Klinik gebracht werden. Diagnostik. Seite 32–34 Eine Klinik zu führen, heißt auch, sie im Kliniken werden kaum noch darauf verzich- Seite 11 Marktumfeld unverwechselbar zu ten können. Seite 4 positionieren. Medizin & Technik Mitarbeiter im Mittelpunkt 9 Initiative will erfahrene Mitarbeiter aus OP und Anästhesie in ihrem Tätigkeitsfeld halten und neue Fachkräfte gewinnen. Gezielte Tumorbestrahlung Hüftprothese - Pro und Contra 10 Ist ein Gelenk erhaltender operativer Eingriff sinnvoll und möglich? Die Stahlentherapie am Koronare Herzerkrankung 12 Universitätsklinikum Die Rolle der Echokardiographie bei Patienten mit koronarer Herzerkrankung Münster (UKM) erhält durch die Einweihung eines neuen IT & Kommunikation Lückenlose Bewegungsmuster 17 Beschleunigers neue und Energieeffiziente Chip-Technologien, Smartphones und Webplattformen als moderne Behandlungsmög- Basis mobiler Medical Monitoring Systeme FallAkte als Baukasten-System 20 lichkeiten. Dr. Jutta Jessen Der Verein elektronische FallAkte entwickelt mit dem Fraunhofer Institut für sprach mit der Leitenden Software- und Systemtechnik das Konzept „eFA in a box“. Oberärztin der Klinik für Strahlentherapie am UKM, Pharma Kürzere Bestrahlungszeiten, verbesserte Genauigkeit und höchste Leistungsfähigkeit Geschlechtsspezifische Medika- Dr. Iris Ernst. – Anfang August wurde der erste Patient mit dem neuen Gerät bestrahlt. mente 21 Neuste Ergebnisse zeigen einen deutlichen Unterschied im Stoffwechsel M&K: Was sind die besonderen Vorteile von Männern und Frauen. -
The Development of the Periodic Table and Its Consequences Citation: J
Firenze University Press www.fupress.com/substantia The Development of the Periodic Table and its Consequences Citation: J. Emsley (2019) The Devel- opment of the Periodic Table and its Consequences. Substantia 3(2) Suppl. 5: 15-27. doi: 10.13128/Substantia-297 John Emsley Copyright: © 2019 J. Emsley. This is Alameda Lodge, 23a Alameda Road, Ampthill, MK45 2LA, UK an open access, peer-reviewed article E-mail: [email protected] published by Firenze University Press (http://www.fupress.com/substantia) and distributed under the terms of the Abstract. Chemistry is fortunate among the sciences in having an icon that is instant- Creative Commons Attribution License, ly recognisable around the world: the periodic table. The United Nations has deemed which permits unrestricted use, distri- 2019 to be the International Year of the Periodic Table, in commemoration of the 150th bution, and reproduction in any medi- anniversary of the first paper in which it appeared. That had been written by a Russian um, provided the original author and chemist, Dmitri Mendeleev, and was published in May 1869. Since then, there have source are credited. been many versions of the table, but one format has come to be the most widely used Data Availability Statement: All rel- and is to be seen everywhere. The route to this preferred form of the table makes an evant data are within the paper and its interesting story. Supporting Information files. Keywords. Periodic table, Mendeleev, Newlands, Deming, Seaborg. Competing Interests: The Author(s) declare(s) no conflict of interest. INTRODUCTION There are hundreds of periodic tables but the one that is widely repro- duced has the approval of the International Union of Pure and Applied Chemistry (IUPAC) and is shown in Fig.1. -
Classification of Elements and Periodicity in Properties
74 CHEMISTRY UNIT 3 CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES The Periodic Table is arguably the most important concept in chemistry, both in principle and in practice. It is the everyday support for students, it suggests new avenues of research to After studying this Unit, you will be professionals, and it provides a succinct organization of the able to whole of chemistry. It is a remarkable demonstration of the fact that the chemical elements are not a random cluster of • appreciate how the concept of entities but instead display trends and lie together in families. grouping elements in accordance to An awareness of the Periodic Table is essential to anyone who their properties led to the wishes to disentangle the world and see how it is built up development of Periodic Table. from the fundamental building blocks of the chemistry, the understand the Periodic Law; • chemical elements. • understand the significance of atomic number and electronic Glenn T. Seaborg configuration as the basis for periodic classification; • name the elements with In this Unit, we will study the historical development of the Z >100 according to IUPAC Periodic Table as it stands today and the Modern Periodic nomenclature; Law. We will also learn how the periodic classification • classify elements into s, p, d, f follows as a logical consequence of the electronic blocks and learn their main configuration of atoms. Finally, we shall examine some of characteristics; the periodic trends in the physical and chemical properties • recognise the periodic trends in of the elements. physical and chemical properties of elements; 3.1 WHY DO WE NEED TO CLASSIFY ELEMENTS ? compare the reactivity of elements • We know by now that the elements are the basic units of all and correlate it with their occurrence in nature; types of matter. -
St. Cloud Tribune Vol. 19, No. 13, November 17, 1927
University of Central Florida STARS St. Cloud Tribune Newspapers and Weeklies of Central Florida 11-17-1927 St. Cloud Tribune Vol. 19, No. 13, November 17, 1927 St. Cloud Tribune Find similar works at: https://stars.library.ucf.edu/cfm-stcloudtribune University of Central Florida Libraries http://library.ucf.edu This Newspaper is brought to you for free and open access by the Newspapers and Weeklies of Central Florida at STARS. It has been accepted for inclusion in St. Cloud Tribune by an authorized administrator of STARS. For more information, please contact [email protected]. STARS Citation St. Cloud Tribune, "St. Cloud Tribune Vol. 19, No. 13, November 17, 1927" (1927). St. Cloud Tribune. 273. https://stars.library.ucf.edu/cfm-stcloudtribune/273 ST. CLOUD II Mil KM I KK 1927 NOVKMBKK 1927 Sm, MM Tu,. «,,! i>... Pn. S.I Weduewlnj'. \„ . o 84-4*2 Ul v Bl 1 2 3 4 5 Tliiir*iii.v. Nov 10 M all 6 7 8 9 10 11 12 13 14 II 16 17 18 19 Kriiln.v, Na.v il 82—06 20 21 22 23 24 25 26 Ntiliinlny, Na.a, Ul m IMI 27 28 29 30 Ul Ul Ul SIIIIIIH.V. Hot I : MI ,n Ul 111 W . | . „ Maiiiilii.i MOT, II wi II.-I itr, N.IV i.-, ga iv, VOI.IIMi: NINKTKKN I 1)1 I). OSIF.OI A I IM \l V. KIOKIIIA I III KNOW. NOVBMBBB 17, 11.27 Miim K niiitn i \ I.ADIKS IMri'tlU Ml M <Ll It lll\\KSt;l\ INL. -
The Rare Earths II
Redis co very of the Elements The Ra re Earth s–The Con fusing Years I A gallery of rare earth scientists and a timeline of their research I I James L. Marshall, Beta Eta 1971 , and Virginia R. Marshall, Beta Eta 2003 , Department of Chemistry, University of North Texas, Denton, TX 76203-5070, [email protected] The rare earths after Mosander. In the pre - vi ou s HEXAGON “Rediscovery” article, 1p we were introduced to the 17 rare earths, found in the f-block and the Group III chemical family of Figure 1. Important scientists dealing with rare earths through the nineteenth century. Johan Gadolin the Periodic Table. Because of a common (1760 –1852) 1g —discovered yttrium (1794). Jöns Jacob Berzelius (1779 –1848) and Martin Heinrich valence electron configuration, the rare earths Klaproth (1743 –1817) 1d —discovered cerium (1803). Carl Gustaf Mosander (1787 –1858) 1p —discovered have similar chemical properties, and their lanthanum (1839), didymium (1840), terbium, and erbium (1843). Jean-Charles deGalissard Marignac chemical separation from one another can be (1817 –1894) 1o —discovered ytterbium (1878) and gadolinium (1880). Per Teodor Cleve (1840 –1905) 1n — difficult. From preparations of the first two rare discovered holmium and thulium (1879). Lars Fredrik Nilson (1840 –1899) 1n —discovered scandium earth element s—yttrium and ceriu m—the (1879). Paul-Émile Lecoq de Boisbaudran (1838 –1912) —discovered samarium (1879) and dysprosium Swedish chemist Carl Gustaf Mosander (Figure (1886). 1b Carl Auer von Welsbach (1858 –1929) 1c —discovered praseodymium and neodymium (1885); 1, 2) was able to separate four additional ele - co-discovered lutetium (1907). -
Spectrophotometric Determination of Praseodymium by 1,4
Arab Journal of Sciences & Research publishing Issue (2), Volume (1) September 2015 ISSN: 2518 - 5780 Spectrophotometric Determination of Praseodymium by 1,4- Dihydroxyanthraquinone after its Selective Separation from Rosetta Monazite Rare Earth Concentrate by Solvent Extraction Abdel Fattah N. A a Sadeek A. S b Ali B. H a Abdo, A. A a Weheish, H. L.a a Nuclear Materials Authority || Egypt b Faculty of Science || Zagazig University || Egypt Abstract: A rare earths concentrate of Rosetta monazite assays about 44, 23, 16.94 and 5.91 % for Ce, La, Nd and Pr respectively. Separation of cerium by air oxidation at 200oC. Selective separation of Pr by D2EHPA at pH1 followed by a sensitive spectrophotometric method which described for the determination of praseodymium (Pr) with l,4- dihydroxyanthraquinone . The calibration curve was linear from 0.1 to 12 µgml -1 praseodymium. The influences of various parameters and reaction conditions for maximum colour development were investigated. The relative standard deviation for determination of 1 µgml-1 praseodymium has found to be 1.3 after 5 repeated determinations; percent error 5.02%, molar absorptivity (ε) was 1.23x106M-1 cm-1and detection limit was 0.1µgml-1. The method for determination of praseodymium showed good accuracy and selectivity. INTRODUCTION Rare earth elements (REEs), represent one of a set of seventeen chemical elements in the periodic table, specifically the fifteen lanthanides, as well as scandium and yttrium (Connelly, N.G., et al., 2005). It was discovered of the black mineral Gadolinite by Carl Axel Arrhenius in 1787 (Gschneidner, and Cappellen, 1987). Traditionally, the REEs are divided into two groups on the basis of atomic weight; the light REEs are lanthanum through gadolinium (atomic numbers 57 through 64); and the heavy REEs comprise terbium through lutetium (atomic numbers 65 through 71). -
Schedule Report
New Releases - 1 October 2021 SAY SOMETHING RECORDS • Available on stunning Red and Black Splatter vinyl (SSR027LP)! A collector's must!! • Featuring: Vocalist Colin Doran of Hundred Reasons, drummer Jason Bowld from Bullet For My Valentine and formerly Pitchshifter, Killing Joke • Full servicing to all relevant media • Extensive print & internet advertising • Print reviews confirmed in KERRANG! and METAL HAMMER • Featured interviews with ‘The Sappenin’ Podcast’ and ‘DJ Force X’ https://open.spotify.com/episode/0ZUhmTBIuFYlgBamhRbPHW?si=9O4x5SWmT2WbhSC0lR3P3g • For fans of: Hundred Reason, Jamie Lenman, Hell is for heroes, The Xcerts, Bullet For My Valentine, Biffy Clyro • Facebook: https://www.facebook.com/TheyFellFromTheSky Twitter: https://twitter.com/tfftsband Instagram: https://www.instagram.com/tfftsband/ • Soundsphere Magazine: https://www.soundspheremag.com/news/culture/colin-doran-jason-bowld-hundred-reasons-bfmv- pitchshifter-form-rock-studio-project-they-fell-from-the-sky/ GigSoup: https://gigsoupmusic.com/pr/colin-doran-jason-bowld-form-rock-studio-project-they-fell-from-the-sky-and- release-debut-single-dry/ The AltClub: https://thealtclub.com/they-fell-from-the-sky-release-new-single-dry/ Volatile Weekly: https://volatileweekly.com/2021/03/colin-doran-jason-bowld-hundred-reasons-bfmv-pitchshifter-form-rock- studio-project-they-fell-from-the-sky-and-release-debut-single-dry/ The Punksite: https://thepunksite.com/news/they-fell-from-the-sky-announce-debut-single-and-album/ Tinnitist: https://tinnitist.com/2021/03/22/indie-roundup-23-songs-to-make-monday-far-more-enjoyable/ -
Dirac-Exact Relativistic Methods: the Normalized Elimination of the Small Component Method† Dieter Cremer,∗ Wenli Zou and Michael Filatov
Advanced Review Dirac-exact relativistic methods: the normalized elimination of the small component method† Dieter Cremer,∗ Wenli Zou and Michael Filatov Dirac-exact relativistic methods, i.e., 2- or 1-component methods which exactly reproduce the one-electron energies of the original 4-component Dirac method, have established a standard for reliable relativistic quantum chemical calculations targeting medium- and large-sized molecules. Their development was initiated and facilitated in the late 1990s by Dyall’s development of the normalized elimination of the small component (NESC). Dyall’s work has fostered the conversion of NESC and related (later developed) methods into routinely used, multipurpose Dirac- exact methods by which energies, first-order, and second-order properties can be calculated at computational costs, which are only slightly higher than those of nonrelativistic methods. This review summarizes the development of a generally applicable 1-component NESC algorithm leading to the calculation of reliable energies, geometries, electron density distributions, electric moments, electric field gradients, hyperfine structure constants, contact densities and Mossbauer¨ isomer shifts, nuclear quadrupole coupling constants, vibrational frequencies, infrared intensities, and static electric dipole polarizabilities. In addition, the derivation and computational possibilities of 2-component NESC methods are discussed and their use for the calculation of spin-orbit coupling (SOC) effects in connection with spin-orbit splittings and SOC-corrected -
Yttrium Från Ytterby Och Litium Från Utö – Del 1 En Topografisk Karta Stockholm Vid 1200-Talets Slut
Grundämnenas upptäckt Grundämnenas upptäckt Exkursioner till Ytterby och Utö 6-7 juni eller 8-9 juni 6 juni Färje 1371: Strömkajen 08:30 Ytterby 09:30 09:45 – 10:45 Ytterby gruva Buss 682: Ytterby 11:03 Engarn 11:07 Buss 670: Engarn 11:09 Tekniska högskolan 11:44 Buss 4: Östra station 11:52 S:t Eriksplan 12:02 12:15 – 14:00 Rörstrands slott (lunch och visning) 14:00 – 16:00 Birkastan 7 juni Tåg 43: Stockholm City 08:16 Västerhaninge station 08:48 Buss 846: Västerhaninge station 09:09 Årstra brygga 09:22 Färje 2173: Årsta brygga 09:30 Gruvbryggan (Utö) 10:10 10:15 – 14:15 Rävstavik och Utö gruvor (matsäck) Färje 2178: Gruvbryggan (Utö) 14:30 Årsta brygga 15:25 Buss 846: Årstra brygga 15:32 Västerhaninge station 15:50 Tåg 43: Västerhaninge station 15:57 Stockholm City 16:29 Grundämnenas upptäckt Exkursioner till Ytterby och Utö 6-7 juni eller 8-9 juni 8 juni Färje 951: Strömkajen 09:15 Ytterby 10:40 10:55 – 11:45 Ytterby gruva Buss 682: Ytterby 12:03 Engarn 12:07 Buss 670: Engarn 12:09 Tekniska högskolan 12:44 Buss 4: Östra station 12:52 S:t Eriksplan 13:02 13:15 – 15:00 Rörstrands slott (lunch och visning) 15:00 – 17:00 Birkastan 9 juni Tåg 43: Stockholm City 08:16 Västerhaninge station 08:48 Buss 846: Västerhaninge station 09:09 Årstra brygga 09:22 Färje 2173: Årsta brygga 09:30 Gruvbryggan (Utö) 10:10 10:15 – 14:15 Rävstavik och Utö gruvor (matsäck) Färje 2178: Gruvbryggan (Utö) 14:30 Årsta brygga 15:25 Buss 846: Årstra brygga 15:32 Västerhaninge station 15:50 Tåg 43: Västerhaninge station 15:57 Stockholm City 16:29