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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 1921 :

Margary's Periodic Table

From Quam & Quam's 1934 review paper.pdf

Bury's Periodic Arrangement based on Langmuir's Theory

Using Langmuir's theory of the arrangement of electrons in atoms, J.Am.Chem.Soc., 41, 868 (1919), Charles R. Bury formulated a Periodic Arrangement: C.R. Bury, Langmuir's theory of the arrangement of electrons in atoms and molecules, J. Am. Chem. Soc., 43, 1602-1609 (1921).

This formulation seems to be the basis of Seaborg's formulations of 1939, 1942 & 1945.

Ricardo R Contreras, Avances en Química, 14(1), 41-60 (2019), has re-drawn the Bury PT and writes [Google Translate]:

"This version emphasizes periods and electronic configurations.

"There is a long period in which the metals of titanium to copper are found, which he calls transition elements. [This formulation] leaves spaces for the element atomic number 43, technetium, discovered by Perrier Segre in 1937; for the element 72, hafnium, discovered in 1932 by D. Coster and G. von Hevesey; for the element 87, the eka-cesium, which corresponds to francium (Fr), discovered in 1939 by the French physicist Marguerite C. Perey (1909-1975) and, at the end of the group of halogens, for the element 85, the astatine (At), synthesized for the first time in 1940 by American physicists Dale R. Corson (1914-2012), Kenneth R. MacKenzie (1912-2002) and the Italian-American physicist Emilio G. Segrè (1905-1989) at the University of Berkeley (California), bombarding bismuth with particles.

"Bury uses 'A' as the symbol argon, 'Nt' (niton) for radon (Rn) and, the symbol 'Bv' (brevium) for proctactinium (Pa)."

Formánek's Periodic Table

Formánek J. 1921, Short Outline of Inorganic Chemistry (in Czech), 2nd ed., Ministerstvo zemedelstvi CSR, Praha. p. 281

René Vernon writes:

Here is an eight column table with some interesting features.

Main groups 0, Ia, IIa, Vb, VIb, and VIIb, correspond to what we have today:

• 0 Noble gases
• Ia Alkali metals
• IIa Alkaline earths
• Vb Pnictogens
• VIb Chalcogens
• VIIb Halogens

Main group IIIa is B-Al-Sc-Y... Ac whereas these days B-Al have been moved over Ga on electronic grounds. This happened despite the fact that the average trend line for chemical and physical properties v Z going down B-Al-Sc-Y... Ac is more regular.

In main group IV, notice how C and SI are positioned in the middle of the cell, unlike their neighbours to either side. The group thus bifurcates after Si into a Ti branch and a Ge branch. This is quite reasonable since there is not much difference in the average trendlines going down either option. In any case, C-Si came to be moved over Ge again on electronic grounds.

He survived the electronic revolution, staying over Ne.

Margary's Modified Table

Ivan D. Margary B.A. (1921) XXXVI. A modification more in accord with atomic structure, The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, 42:248, 287-288.

An old school table showing group 3 as B-Al-Sc-Yt-Rare earths.

Thanks to René for the tip!

© Mark R. Leach Ph.D. 1999 –

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