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  Web Book Home Page | Chemogenesis Main Index Foreword:  Chemogenesis & Chemical Education Part I   Atoms | Elements | Periodic Tables 1.1  Introduction to Chemogenesis 1.2  Nucleosynthesis of The Elements 1.3  The Segrè Chart 1.4  Quantum Numbers to Periodic Tables 1.5  The Periodic Table: What Is It Showing? 1.6  The INTERNET Database of Periodic Tables 1.7  Periodicity Part II   Structure | Bonding | Material Type 2.1  Mono-Bond Typed Binary Compounds 2.2  Binary Compound Synthlet 2.3  Electronegativity 2.4  van Arkel-Ketelaar Triangles of Bonding 2.5  Tetrahedra of Structure, Bonding & Material Type 2.6  Structure, Bonding & Material Synthlet 2.7  The Classification of Matter: Chemical Stuff Part III   Interactions | Reactions | Mechanisms 3.1  The Chemogenesis Analysis: An Overview 3.2  Lewis and Brønsted Models of Acidity 3.3  The Hard Soft [Lewis] Acid Base Principle 3.4  Main Group Elemental Hydrides 3.5  Five Hydrogen Probe Experiments 3.6  Congeneric Dots, Series & Planars 3.7  Quantifying Congeneric Behaviour 3.8  Ligand Replacement Congeneric Series 3.9  Congeneric Array Interactions 3.10  Emergence of Organic Chemistry 3.11  Congeneric Array Database 3.12  The Five Reaction Chemistries 3.13  Lewis Acids & Lewis Bases: A New Analysis 3.14  The Lewis Acid/Base Interaction Matrix 3.15  Patterns in Reaction Chemistry Poster 3.16  Lewis Acid/Base Interaction Matrix Database 3.17  Nucleophiles, Bases & The Fluoride Ion 3.18  Redox Chemistry 3.19  Redox Chemistry Synthlet 3.20  Radical Chemistry 3.21  Diradical Chemistry 3.22  Photochemistry 3.23  Species/Species Interactions 3.24  The Simplest Mechanistic Step: STAD 3.25  Unit & Compound Mechanistic Steps 3.26  The Mechanism Matrix 3.27  Addition To A Double Bond Synthlet 3.28  Pericyclic Reaction Chemistry Part IV   Chemical Theory 4.1  Why Do Chemical Reactions Occur? 4.2a  Thermochemistry: List Reactions Synthlet 4.2b  Thermochemistry: Play With Reaction Synthlet 4.2c  Thermochemistry: Bulid A Reaction Synthlet 4.3  Timeline of Structural Theory 4.4  Modern Lewis Theory 4.5  Valence Shell Electron Pair Repulsion: VSEPR 4.6  Diatomic Species by Molecular Orbital Theory 4.7  Polyatomic Species: Molecular Orbitals 4.8  Organic π-Systems 4.9  Functional Group Database Part V   Complexity & Emergence 5.1  Chemistry & Complexity: Systems 5.2  Linear Chemistry Systems 5.3  Chemical Systems Prone to Complexity Part VI   Extras 6.1  Chemogenesis Videos 6.2  Chemical Thesaurus Reaction Chemistry Database 6.3  Paper: Chemogenesis 6.4  Paper: Electronegativity as a Basic Elemental Property (FoC) 6.5  Workshop: What is Chemistry? 6.6  Paper: Scientific laws, Dalton’s postulates, chemical reactions
          and Wolfram’s NKS (FoC) 6.7  Literature References & Further Reading

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The INTERNET Database of Periodic Tables

There are thousands of periodic tables in web space, but this is the only comprehensive database of periodic tables & periodic system formulations. If you know of an interesting periodic table that is missing, please contact the database curator: Mark R. Leach Ph.D. The database holds information on periodic tables, the discovery of the elements, the elucidation of atomic weights and the discovery of atomic structure (and much, much more).

Periodic Tables from the year 1974 :

Mazurs Version of Janet's "Lemniscate" Formulation

Janet's lemniscate formulation periodic table as modified by E.G. Mazur in his Graphic Representations of the Periodic System during One Hundred Years (1974), cited in Punyashloke Mishra's The Role of Abstraction in Scientific Illustration: Implications for Pedagogy (1999) republished in Carolyn Handa's Visual Rhetoric in a Digital World: A Critical Sourcebook", from the Island94 blog, here:

Mazurs Wooden Version of Mendeleev's Periodic Table

There is a posting in the The Elements Unearthed blog by David V Black concerning a view of the Marzus archive:

"My biggest discovery this week has been a collection in our archives of the notes of Edward Mazurs, who wrote the definitive work on classifying different systems of periodic tables in 1957 with a revised edition in 1974 (Graphic Representations of the Periodic System During One Hundred Years, University of Alabama Press). He collected articles and wrote extensive, detailed notes on every version of the periodic table he could find as it developed from its start in the early 1860s with the work of de Chancourtois through 1974. All of those notes have been donated to Chemical Heritage Foundation and fill up ten binders, with meticulous drawings, charts, tables, and frequent additions and changes. There are also some pieces of the original artwork prepared for the book, and a wooden model of the periodic table Mazurs built himself. "

Mazurs' PT Formulation Analysis

In his 1974 book Edward G. Mazurs (2nd edition) Graphic Representations of the Periodic System During One Hundred Years, University of Alabama Press gives a comprehensive analysis of periodic table formulations.

Mazurs identifies most PT formulations as being:

• Spiral
• Plane lemniscate
• Concentric circles
• Helix on a cylinder
• Helix on a cone
• Space lemniscate
• Space concentric circles

Discovery of Seaborgium

Seaborgium, atomic number 106, has a mass of 271 au.

Synthetic radioactive element.

Seaborgium was first observed in 1974 by A. Ghiorso et al.

• Wikipedia
• Webelements
• Periodictable.com
• ChemicalThesaurus

Mazurs' Redrawing of Stedman's Formulation

An spiral formulation by Mazurs, cited as being after Janet (1928). However, it is actually, it is after Stedman (1947).

In an article Bull. Hist. Chem., VOLUME 34, Number 2 (2009) O.T. Benfey writes:

"After we had developed our own [Periodic Snail] spiral design, we found that E. G. Mazurs had published a spiral with a separate protrusion for the lanthanides which, under the image, he misleadingly ascribed to Charles Janet in 1928, the same year that Janet had published a simple circular form also shown by Mazurs. The Mazurs diagram with the lanthanide protrusion was reprinted in [the journal] Chemistry. However, [Philip] Stewart informed me that the Mazurs figure bears no resemblance to the Janet diagram he indicated nor to any other of his designs. Detailed references given a few pages later by Mazurs suggested correctly that the spiral derives from Stedman and is so identified and depicted by van Spronsen. The Mazurs diagram is a mirror image of the Stedman spiral, updated to include elements discovered since 1947." [For references, see the article.]"

Mazurs (p. 77) writes:

"Subtype IIIA3–1a Helix on a modified cone. The transition and inner transition elements have special revolutions in the form of loops. This table, originated by Stedman in 1947 is not a successful one."

Thanks to René for the tip and information!

© Mark R. Leach Ph.D. 1999 –

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