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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 hold information on periodic tables, the discovery of the elements and elucidation of atomic weights (and more).

Annual Report on the Progress of Chemistry and Related Areas of Other Sciences 1871

Jahresbericht über die Fortschritte der Chemie und verwandter Theile anderer Wissenschaften. (Annual Report on the progress of chemistry and related areas of other sciences.) HathiTrust Index scanned reports 1847-1910.

The 1871 table of data is here.

Mark Leach writes:

"Every year the annual report started with a list of the known chemical elements and their atomic weights, however, to the modern eye there were many systermatic errors. For example, oxygen (Sauerstoff) is given as having a weight of 8 which would have caused – due to the importance of oxides – other atomic weights to be out by a factor of 2 or 3. Once a list of correct atomic weights was known, it would be possible to construct a periodic table of the elements.

"In 1858 the Cannazzario letter gave more correct list of atomic weights and corrected the numerous stoichiometric errors that plagued chemistry at the time. Over the years from 1858 to 1873 the entries in the annual report gradually adopted the Cannazzario logic."

• Didym Di = 48 and 95 was actually a mixture of rare earth elements.
• The missing elements had yet to be discovered.
• Al = 13.7 and 27.4
• Ba = 68.5 and 137
• Be = 4.7 and 7.0
• Pb = 103.5 and 207
• Cd = 56 and 112
• Ca = 20 and 40
• Ce = 56 and 92
• Cr = 26 and 52
• Fe = 28 and 56
• Er = 56.3 and 112.6
• Ir = 99 and 198
• Co = 29.4 and 58.8
• C = 6 and 12
• Cu = 31.7 and 63.4
• La = 46.8 and 93.6
• Mg = 12 and 24
• Mn = 27.5 and 55
• Mo = 48 and 96
• Ni = 29.5 and 58
• Os = 100 and 200
• Pd = 53 and 106
• Pt = 99 and 198
• Hg = 100 and 200
• Rh = 52 and 104
• Ru = 52 and 104
• Si = 14 and 28
• O = 8 and 16
• S = 16 and 32
• Se = 39.5 and 79
• Sr = 43.8 and 87.6
• Te = 64 and 128
• Th = 57.86 and 115.72
• Ti = 25 and 50
• Wo = 92 and 184 (note change from W to Wo)
• Y = 30.8 and 61.6
• Zn = 32.5 and 65
• Sn = 59 and 118
• Zr = 45 and 90

Thanks to René and Mario Rodriguez for the tip!

© Mark R. Leach Ph.D. 1999 –

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