Celebration of the Periodic Table Editorial

Total Page:16

File Type:pdf, Size:1020Kb

Celebration of the Periodic Table Editorial EDITORIAL CELEBRATION OF THE PERIODIC TABLE DOI: 10.2138/gselements.15.5.295 The periodic table of chem­ ical elements is one of the PRINCIPAL EDITORS most significant achieve­ NANCY L. ROSS, Virginia Tech, USA ([email protected]) ments in science because it JONATHAN D. BLUNDY, University of Bristol, arranges the 118 known ele­ UK ([email protected]) ments in a deceptively JOHN M. EILER, Caltech, USA simple pattern that reveals ([email protected]) their properties. So how did EXECUTIVE COMMITTEE this “Rosetta Stone of BLANCA BAULUZ, Sociedad Española Nancy Ross Nature” originate? Most di Mineralogía likely, you will answer COSTANZA BONADIMAN, Società Italiana di Mineralogia e Petrologia Dmitri Mendeleev, the VALÉRIE BOYSE, Société Française Russian chemist who in 1869 published a version de Minéralogie et de Cristallographie of the periodic table that we recognize today. His Model of de Chancourtois’ vis tellurique, showing the CATHERINE CORRIGAN, Meteoritical Society table expresses the periodic law: elements periodic arrangement of elements. KATERINA M. DONTSOVA, The Clay Minerals Society arranged according to the size of their atomic BARBARA L. DUTROW, Mineralogical weights show periodic properties. To celebrate the one another on the cylinder (FIG. 1). He presented Society of America 150th­anniversary of this great achievement, the his ideas to the French Academy of Sciences and MASAKI ENAMI, Japan Association United Nations and UNESCO declared 2019 to be published his work in 1862. Unfortunately, an of Mineralogical Sciences the International Year of the Periodic Table of original diagram was left out of the publication, DANIEL J. FROST, European Association of Geochemistry, Chair Elements. But does Mendeleev deserve all the making the paper hard to comprehend. Although BERNARD GROBÉTY, Swiss Society of credit? Scientific discoveries rarely arise in isola­ de Chancourtois republished his work with the Mineralogy and Petrology tion; rather contributions from researchers over diagram later, it was largely ignored by chemists. MARK E. HODSON, Mineralogical Society of Great Britain and Ireland many years lead to a general picture that eventu­ After this, he appeared to lose interest in his idea HEATHER JAMIESON, Mineralogical ally emerges. But, sometimes, scientific discov­ and returned to other scientific endeavors. Association of Canada eries are made simultaneously by different DAVID R. LENTZ, International Association researchers. Such is the story of the periodic table. More discoveries of the periodic system of ele­ on the Genesis of Ore Deposits ments quickly followed. John Newlands, a British KLAUS MEZGER, Deutsche Mineralogische Among the critical events that led to the discovery sugar chemist and private chemistry tutor, noticed Gesellschaft of the periodic table was the emergence of atomic trends between elements and their weights, and MAREK MICHALIK, Mineralogical Society of Poland theory that had been initially proposed in 1808 published his “law of octaves” in 1865. Similar to RYAN R.P. NOBLE, Association of Applied by John Dalton, a British tutor and schoolteacher. de Chancourtois, Newlands’ work attracted little Geochemists A key advance was Dalton’s assignment of rela- attention and his pattern did not hold up very ORFAN SHOUAKAR­STASH, International Association of GeoChemistry tive weights to the atoms of elements. But how well. Four years after Karlsruhe, British chemist SASHA TURCHYN, Geochemical Society does one obtain an absolute weight of an atom? William Odling published a table that included MICHAEL WIEDENBECK, International In 1811, Italian physicist and mathematician 57 elements. However, Odling’s system also failed Association of Geoanalysts Amedeo Avogadro proposed an idea to calculate to have much impact, and he did not pursue it EXECUTIVE EDITOR atomic weights from gases, but his hypothesis was further. Gustavus Hinrichs, a Dane who immi­ JODI J. ROSSO ([email protected]) not widely accepted. It was ~50 years later that grated to the United States, published a unique Italian chemist Stanislao Cannizzaro resurrected periodic system with the elements in a “bicycle EDITORIAL OFFICE Avogadro’s ideas and showed how atomic weights wheel” form, with groups of elements displayed could be calculated unambiguously. Cannizzaro’s as spokes. Lothar Meyer, an influential German paper, published in a local Pisa (Italy) journal, chemist, produced several versions of the periodic did not attract many readers and was repub­ table from 1864 onwards. Unfortunately, Meyer’s 2710 Crimson Way, Floyd 263 lished as a pamphlet in 1859. Cannizzaro then work wasn’t published until 1870, a year after Richland, WA 99354­1671, USA attended a conference that would change the Mendeleev’s 1869 periodic table, so his contribu­ Tel/Fax: (509) 420­5331 (UTC­8) course of history of the periodic table. In 1860, tions are over­shadowed by Mendeleev. Layout: POULIOT GUAY GRAPHISTES the first international chemical congress was held Copy editor: PATRICK ROYCROFT in Karlsruhe (Germany) and 140 of the world’s The history of the periodic table is a remarkable Proofreader: PATRICK ROYCROFT tale, involving discoveries by six diverse indi­ Printer: ALLEN PRESS leading chemists attended. The sole purpose of viduals over a seven­year period. There were key The publishers assume no responsibility for the meeting was to sort out the basic units of any statement of fact or opinion expressed chemical interaction and the proper methods discoveries and events such as the 1860 congress in the published material. The appearance that accelerated its development. Mendeleev may of advertising in this magazine does not for determining unequivocal atomic weights. constitute endorsement or approval of the Cannizzaro’s defense of Avogadro’s ideas attracted not have been the first to develop a periodic quality or value of the products or of the system of the elements, but he was a master at claims made for them. great interest and copies of his pamphlet were dis­ tributed. Cannizzaro’s action provided the cata­ exploiting it. The discovery of the periodic table, elementsmagazine.org lyst for the development of the modern periodic as we currently know it, in 1869 was transforma­ table. Chemists Lothar Meyer, William Odling, tive, because it freed chemical science from asso­ and Dmitri Mendeleev all attended the confer­ ciations with the medieval mysticism of alchemy. ence and were inspired by Cannizzaro’s work. The periodic table even provided hints of the existence of subatomic structure that would be HOW TO BECOME AN ELEMENTS It was a French geologist and mineralogist discovered in the next century. PARTICIPATING SOCIETY? Alexandre­Émile Béguyer de Chancourtois who There are many lessons to be learned from the his­ Contact Daniel F. Frost was the first to arrange the chemical elements in ([email protected]), order of their atomic weights. He devised a 3­D tory of the periodic table. The discoveries of four Elements Executive Committee Chair spiral graph and plotted the atomic weights on of the six discoverers of the table were not recog­ the surface of a cylinder that brought similar ele­ nized until many years after they were published. ments onto corresponding points above or below Cont’d on page 296 ELEMENTS 295 OCTOBER 2019 Downloaded from http://pubs.geoscienceworld.org/msa/elements/article-pdf/15/5/295/4839606/gselements-15-5-295.pdf by guest on 25 September 2021 FROM THE EDITORS ABOUT THIS ISSUE ELEMENTS AT GOLDSCHMIDT2019 As we go to press, the Intergovernmental Panel on Climate Change The Elements principal editors met in Barcelona (Spain) on Sunday, 17 (IPCC) has just released its 2019 “Special Report on the Ocean and August 2019, for their annual face­to­face meeting. The all­day meeting Cryosphere in a Changing Climate” (https://www.ipcc.ch/srocc/ took place at the Barcelona International Convention Center, which is home/). When the topic is climate change, our reaction is usually just a short distance from the beach. While many vacationers enjoyed “Uh­Oh!”. Calls for clean energy, reduced emissions, and consumer the warm summer weather, our Elements editorial team was busy at activism are a regular part of news broadcasts or casual conversations. work. As mentioned in our August 2019 From the Editors column, these Unlike many of the political storms that cur­ meetings are essential for maintaining and/or improving the quality rently rage in national forums, climate and performance of Elements. Lively discussions have always been part change is truly an international and of Elements editorial meetings. This year was no different. Below are global problem. just a few highlights. Our last issue of Elements (August A New Column in Elements 2019 v15n4) focused on the topic of weathering, clearly demon­ Each issue of Elements includes approximately six thematic articles that are short, concise reviews of a specific geoscience topic. Articles are strating how climate (and CO2) links to weathering. The articles in written so that technical non­experts are readily introduced to a subject “Catastrophic Perturbations to the that is out of their field of expertise.Elements authors and editors work Deep Carbon Cycle” take the focus incredibly hard to transform articles into this accessible form, which is on carbon even further by exploring significantly different from typical journal articles or other scientific the passage of carbon among the nonliving comprehensive reviews. That hard work isn’t going unnoticed. Over and living
Recommended publications
  • Historical Development of the Periodic Classification of the Chemical Elements
    THE HISTORICAL DEVELOPMENT OF THE PERIODIC CLASSIFICATION OF THE CHEMICAL ELEMENTS by RONALD LEE FFISTER B. S., Kansas State University, 1962 A MASTER'S REPORT submitted in partial fulfillment of the requirements for the degree FASTER OF SCIENCE Department of Physical Science KANSAS STATE UNIVERSITY Manhattan, Kansas 196A Approved by: Major PrafeLoor ii |c/ TABLE OF CONTENTS t<y THE PROBLEM AND DEFINITION 0? TEH-IS USED 1 The Problem 1 Statement of the Problem 1 Importance of the Study 1 Definition of Terms Used 2 Atomic Number 2 Atomic Weight 2 Element 2 Periodic Classification 2 Periodic Lav • • 3 BRIEF RtiVJiM OF THE LITERATURE 3 Books .3 Other References. .A BACKGROUND HISTORY A Purpose A Early Attempts at Classification A Early "Elements" A Attempts by Aristotle 6 Other Attempts 7 DOBEREBIER'S TRIADS AND SUBSEQUENT INVESTIGATIONS. 8 The Triad Theory of Dobereiner 10 Investigations by Others. ... .10 Dumas 10 Pettehkofer 10 Odling 11 iii TEE TELLURIC EELIX OF DE CHANCOURTOIS H Development of the Telluric Helix 11 Acceptance of the Helix 12 NEWLANDS' LAW OF THE OCTAVES 12 Newlands' Chemical Background 12 The Law of the Octaves. .........' 13 Acceptance and Significance of Newlands' Work 15 THE CONTRIBUTIONS OF LOTHAR MEYER ' 16 Chemical Background of Meyer 16 Lothar Meyer's Arrangement of the Elements. 17 THE WORK OF MENDELEEV AND ITS CONSEQUENCES 19 Mendeleev's Scientific Background .19 Development of the Periodic Law . .19 Significance of Mendeleev's Table 21 Atomic Weight Corrections. 21 Prediction of Hew Elements . .22 Influence
    [Show full text]
  • 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.
    [Show full text]
  • The Value of Vague Ideas in the Development of the Periodic System of Chemical Elements
    The Value of Vague Ideas in the Development of the Periodic System of Chemical Elements. Thomas Vogt Departments of Chemistry & Biochemistry and Philosophy University of South Carolina Abstract The exploration of chemical periodicity over the past 250 years led to the development of the Periodic System of Elements and demonstrates the value of vague ideas that ignored early scientific anomalies and instead allowed for extended periods of normal science where new methodologies and concepts are developed. The basic chemical element provides this exploration with direction and explanation and has shown to be a central and historically adaptable concept for a theory of matter far from the reductionist frontier. This is explored in the histories of Prout’s hypothesis, Döbereiner Triads, element inversions necessary when ordering chemical elements by atomic weights, and van den Broeck’s ad-hoc proposal to switch to nuclear charges instead. The development of more accurate methods to determine atomic weights, Rayleigh and Ramsey’s gas separation and analytical techniques, Moseley’s x-ray spectroscopy to identify chemical elements, and more recent accelerator-based cold fusion methods to create new elements at the end of the Periodic Table point to the importance of methodological development complementing conceptual advances. I propose to frame the crossover from physics to chemistry not as a loss of accuracy and precision but as an increased application of vague concepts such as similarity which permit classification. This approach provides epistemic flexibility to adapt to scientific anomalies and the continued growth of chemical compound space and rejects the Procrustean philosophy of reductionist physics. Furthermore, it establishes chemistry with its explanatory and operational autonomy epitomized by the periodic system of elements as a gateway to other experimental sciences.
    [Show full text]
  • The Platinum Metals in the Periodic System
    “A History of Platinum and its Allied Metals”, by Donald McDonald and Leslie B. Hunt 18 The Platinum Metals in the Periodic System “The six known platiniferous metals, from a certain point of view, may be rightly con­ sidered as forming a separate and well-defined group.” K \ K I. k \KI.<)\ 1(11 M. M S. I860 The gradual increase in the number of elements being discovered and isolated during the early part of the nineteenth century led to a number of attempts at their classification. As early as 1816 the great physicist André Marie Ampère (1775—1836), Professor of Mathematics and Mechanics at the École Polytechni­ que but at this stage of his career very interested in chemistry and in the whole concept of classification, put forward a scheme of ordering the elements that would bring out “the most numerous and essential analogies and be to chemistry what the natural methods are to botany and zoology” (1). All the ele­ ments then known were classified into five groups, one of these being called the “Chrysides”, derived from the Greek word for gold, and including palladium, platinum, gold, iridium and rhodium. Osmium, however, he grouped with titanium. Some of the similarities between the platinum metals were thus recog­ nised at this early date, but Ampère’s method contained no numerical concept. Dobereiner’s Triads That such a quantitative component was necessary was first recognised by J. W. Dôbereiner who noticed in 1817 that the molecular weights for calcium oxide, strontium oxide and barium oxide formed a regular series or triad with that of strontium being the arithmetic mean of the other two.
    [Show full text]
  • Celebration of the Periodic Table Editorial
    EDITORIAL CELEBRATION OF THE PERIODIC TABLE DOI: 10.2138/gselements.15.5.295 The periodic table of chem­ ical elements is one of the PRINCIPAL EDITORS most significant achieve­ NANCY L. ROSS, Virginia Tech, USA ([email protected]) ments in science because it JONATHAN D. BLUNDY, University of Bristol, arranges the 118 known ele­ UK ([email protected]) ments in a deceptively JOHN M. EILER, Caltech, USA simple pattern that reveals ([email protected]) their properties. So how did EXECUTIVE COMMITTEE this “Rosetta Stone of BLANCA BAULUZ, Sociedad Española Nancy Ross Nature” originate? Most di Mineralogía likely, you will answer COSTANZA BONADIMAN, Società Italiana di Mineralogia e Petrologia Dmitri Mendeleev, the VALÉRIE BOYSE, Société Française Russian chemist who in 1869 published a version de Minéralogie et de Cristallographie of the periodic table that we recognize today. His Model of de Chancourtois’ vis tellurique, showing the CATHERINE CORRIGAN, Meteoritical Society table expresses the periodic law: elements periodic arrangement of elements. KATERINA M. DONTSOVA, The Clay Minerals Society arranged according to the size of their atomic BARBARA L. DUTROW, Mineralogical weights show periodic properties. To celebrate the one another on the cylinder (FIG. 1). He presented Society of America 150th­anniversary of this great achievement, the his ideas to the French Academy of Sciences and MASAKI ENAMI, Japan Association United Nations and UNESCO declared 2019 to be published his work in 1862. Unfortunately, an of Mineralogical Sciences the International Year of the Periodic Table of original diagram was left out of the publication, DANIEL J. FROST, European Association of Geochemistry, Chair Elements.
    [Show full text]
  • The Royal Society of Chemistry Presidents 1841 T0 2021
    The Presidents of the Chemical Society & Royal Society of Chemistry (1841–2024) Contents Introduction 04 Chemical Society Presidents (1841–1980) 07 Royal Society of Chemistry Presidents (1980–2024) 34 Researching Past Presidents 45 Presidents by Date 47 Cover images (left to right): Professor Thomas Graham; Sir Ewart Ray Herbert Jones; Professor Lesley Yellowlees; The President’s Badge of Office Introduction On Tuesday 23 February 1841, a meeting was convened by Robert Warington that resolved to form a society of members interested in the advancement of chemistry. On 30 March, the 77 men who’d already leant their support met at what would be the Chemical Society’s first official meeting; at that meeting, Thomas Graham was unanimously elected to be the Society’s first president. The other main decision made at the 30 March meeting was on the system by which the Chemical Society would be organised: “That the ordinary members shall elect out of their own body, by ballot, a President, four Vice-Presidents, a Treasurer, two Secretaries, and a Council of twelve, four of Introduction whom may be non-resident, by whom the business of the Society shall be conducted.” At the first Annual General Meeting the following year, in March 1842, the Bye Laws were formally enshrined, and the ‘Duty of the President’ was stated: “To preside at all Meetings of the Society and Council. To take the Chair at all ordinary Meetings of the Society, at eight o’clock precisely, and to regulate the order of the proceedings. A Member shall not be eligible as President of the Society for more than two years in succession, but shall be re-eligible after the lapse of one year.” Little has changed in the way presidents are elected; they still have to be a member of the Society and are elected by other members.
    [Show full text]
  • The Periodic Table and the Platinum Group Metals
    DOI: 10.1595/147106708X297486 The Periodic Table and the Platinum Group Metals By W. P. Griffith Department of Chemistry, Imperial College, London SW7 2AZ, U.K.; E-mail: [email protected] The year 2007 marked the centenary of the death of Dmitri Mendeleev (1834–1907). This article discusses how he and some of his predecessors accommodated the platinum group metals (pgms) in the Periodic Table, and it considers the placing of their three transuranic congeners: hassium (108Hs), meitnerium (109Mt) and darmstadtium (110Ds). Over twenty-five years ago McDonald and Hunt (1) wrote an excellent account of the pgms in their periodic context. This account is indebted to that work. The present article introduces new perspectives and shows some of the relevant tables. There are good books on the history of the Periodic Table, e.g. (2, 3) and other texts (4, 5) which provide a fuller picture than it is possible to give here. Discovery and Early Classification palladium and rhodium in 1802 and 1804 (6) and of the Platinum Group Metals Smithson Tennant’s (1761–1815) isolation of iridi- Antoine-Laurent Lavoisier (1743–1794) in 1789 um and osmium in 1804 (7, 8). Ruthenium was the defined the element as being “the last point that last to be isolated, by Karl Karlovich Klaus analysis can reach”, and it was largely this clear state- (1796–1864) in 1844 (9–11). Thus, five of the six ment which brought about the discovery of 51 new were known by 1804, and the sixth by 1844, in good elements in the nineteenth century alone.
    [Show full text]
  • Heroes of the Periodic Table
    Heroes of the Periodic Table By Derek Marshall A tribute to Mendeleev and the Periodic Table of the Elements in Bratislava, Slovakia. Notice the empty spaces for more elements around the edges. Being Armed with the Scientific Method The Periodic Table of the Elements was not conceived by one person, but was a product of many scientists. The discovery of the periodic system is an example of science and the scientific method at its very best. In order to begin investigating the scientific method, we must understand where it comes from and what is its basis in human inquiry. In order to obtain knowledge, one must establish for themselves what knowledge is. Philosophy is the study of knowledge. It follows that one’s philosophy determines the nature of what they consider truth. Here, we will be investigating one philosophy of knowledge, i.e. natural philosophy. Natural philosophy is practiced by employing the scientific method of inquiry. And science is the product of the Scientific Method. The Scientific Method is the series of steps required to “do” science. Here are the steps we will be discussing that are cogent to our discussion. We will examine an example of each as they relate to the discovery of the Periodic Table. Hypothesis: A hypothesis is a proposed explanation for an observed phenomenon. William Prout, a 19th century English chemist observed that the final mass of some chemical combinations of substances result in integer multiples of the individual mass of smallest substance he knew of at the time, “protyle”. We know now that protyle was actually hydrogen, and his namesake hypothesis “All elements are made of protyle” was only partially correct.
    [Show full text]
  • Sir David and Lady Clary Chemistry Fund Sir David and Lady Clary Chemistry Fund
    Sir David and Lady Clary Chemistry Fund Sir David and Lady Clary Chemistry Fund Chemistry at Magdalen and the University of Oxford Chemistry has a long history at the University of Oxford. The Department of Chemistry is the largest chemistry department in the UK and one of the largest in the western world. Oxford chemists have won at least nine Nobel prizes including Magdalen Fellow Sir Robert Robinson (Chemistry, 1947, for investigations of plant products), Frederic Soddy (Physics, 1921, for his discovery of isotopes), and Dorothy Hodgkin (Chemistry, 1964, for the x-ray structure of penicillin). One of the earliest notable Magdalen chemists was Charles Daubeny (1795–1867). After studying at Magdalen under John Kidd, Daubeny simultaneously held Chairs in Chemistry, Botany, and Geology. However, interest in the sciences can be traced back to the Magdalen’s founder, William of Waynflete, and it was in his honour that the highly distinguished Waynflete Professorships (in Metaphysical Philosophy, Chemistry, Physiology and Pure Mathematics) were established in 1857. The Waynflete Professor of Chemistry has been the University’s most distinguished Chair in Organic Chemistry ever since, and holders have included Professors Sir Benjamin Brodie, William Odling, William Henry Perkin, Sir Robert Robinson (Nobel Laureate, 1947), Sir Jack Baldwin and the current incumbent, Stephen G Davies. The present day Of the 28 Colleges offering Chemistry, Magdalen is one of only five fortunate enough to have a full complement of three Tutorial Fellows in Chemistry: Professors Tim Donohoe (Organic), Andrew Weller (In- organic) and Stuart Mackenzie (Physical and Theoretical Chemistry). Each of these also runs an internation- ally–leading research group in the Department of Chemistry.
    [Show full text]
  • The International Year of the Periodic Table: 150 Years of Arranging Elements by Thomas Ott, ASPE
    The International Year of the Periodic Table: 150 Years of Arranging Elements by Thomas Ott, ASPE Those of you who are not chemists may not be atomic masses, arranged in sets of seven to eight aware that the United Nations has declared 2019 elements called octaves.3 In a way similar to to be the “International Year of the Periodic octaves in a musical scale, every eighth element Table.” This recognizes 150 years since Dmitri was to have properties similar to the element Mendeleev presented his periodic arrangement of in the same place on the scale in a previous or the elements to the Russian Chemical Society on subsequent octave. While many elements which March 6, 1869, just a few months before Lothar are currently grouped together were similarly Meyer of Germany published an equivalent grouped in Newlands’ table (e.g., fluorine, table. In 1882, the Royal Society in England chlorine, bromine, and iodine are in one group; honored both Mendeleev and Meyer with the lithium, sodium, and the other alkali metals are Davy Medal for their work.1 in another), other elements were out of place. For instance, cobalt and nickel occupied one space The periodic table allows chemists to predict (and there were other such two-element spaces) many chemical and physical properties of on the same step as fluorine and chlorine; and elements based upon knowledge of other oxygen, gold, and iron appeared to be similar. elements in the table. Mendeleev was the first Also, the correct masses of some elements to arrange the elements known at that time in a were not known, causing them to be misplaced.
    [Show full text]
  • The Periodic Table
    Rediscovery of the Elements The Periodic Table James L. Marshall, Beta Eta 1971, and Virginia R. Marshall, Beta Eta 2003, Department of Chemistry, University of /S North Texas, Denton TX 76203-5070, [email protected] n the previous "Rediscovery of the Elements,"' we witnessed the Karlsruhe Chemical Congress of 1860, where Stanislao Cannizzaro (1826-1910), by applying Avogadro's and Dulong-Petit's Laws to known -7' data, developed an internally consistent set of atomic weights for the 60-odd elements then known. With these new atomic weight values, Dimitri Ivanovich Mendeleev (1834-1907) and Julius Lothar Meyer (1830-1895) (Figure 1) returned home and independently drafted new sortings of these elements that evolved into the Figure 1. Although there have been several individuals who recognized patterns in the elements (see Note modern Periodic Table. These two scientists 1), Julius Lothar Meyer (1830-1895) (left) and Dimitri Ivanovich Mendeleev (1834-1907) are recognized were officially recognized as the discoverers of as the discoverers of the PeriodicTable. the Periodic Law and received the Davy Gold Medal at the Royal Society in 1882.2 (Note 1) The original motivation for the development structure of the atom. Meyer's prophesies of today more commonly associate the Periodic of this new periodic system by Meyer and atomic structure had to wait several decades Table with him. (Note 2). Mendeleev was a desire to develop a pedagog- until Niels Henrik David Bohr (1885-1962) Rediscovering Meyer. (For a map of his- ically useful arrangement of the elements for interpreted the Periodic Table in terms of elec- toric sites, see Figure 3.) The birthplace of their new textbooks.
    [Show full text]
  • Approaching a Study of the Periodic Table from a Nature of Science Perspective
    Avondale College ResearchOnline@Avondale Science and Mathematics Papers and Journal Articles School of Science and Mathematics 4-2003 Approaching a Study of the Periodic Table from a Nature of Science Perspective Kevin C. de Berg Avondale College, [email protected] Follow this and additional works at: https://research.avondale.edu.au/sci_math_papers Part of the Chemistry Commons Recommended Citation de Berg, K. C. (2003). Approaching a study of the periodic table from a nature of science perspective. Australian Journal of Education in Chemistry, 2003(61), 9-13. This Article is brought to you for free and open access by the School of Science and Mathematics at ResearchOnline@Avondale. It has been accepted for inclusion in Science and Mathematics Papers and Journal Articles by an authorized administrator of ResearchOnline@Avondale. For more information, please contact [email protected]. Aust. J. Ed. Chem., 2003, 61, Approaching a study of the periodic table from a nature of science perspective Kevin C de Berg Avondale College, PO Box 19, Cooranbong, NSW 2265, Australia, [email protected] Abstract An historical approach to a study of the Periodic Table which emphasises how knowledge is constructed has great value in helping students address issues related to the nature of science. A key feature of the nature of science particularly applicable to the Periodic Law is outlined and discussed with reference to the work of Dobereiner, Newlands, Mendeleeff, and recent observations by Scerri. A teaching/learning strategy
    [Show full text]