Home Page
About
Chemogenesis Web Book
Chemical Thesaurus
Tutorials and Drills
Shop
Reviews
Contact
Links
Frequently Asked Questions

pre 1900 formulations
1900 to 1949 formulations
1950 to 1999 formulations
post 2000 formulations
Spiral formulations
3 dimensional formulations
Data mapping periodic tables
Miscellaneous periodic tables
Books and reviews
non-chemistry periodic tables
All periodic tables
INTERNET Database of Periodic Tables
There are hundreds of periodic tables in web space, but there is only one comprehensive database of periodic tables & periodic table formulations. If you know of an interesting periodic table that is missing, please contact the database curator: Mark R Leach.
pre 1900 formulations 1900 to 1949 formulations 1950 to 1999 formulations post 2000 formulations Spiral formulations 3 dimensional formulations
Data mapping periodic tables Miscellaneous periodic tables Books and reviews non-chemistry periodic tables All periodic tables

1871

Mendeleev's Predicted Elements

In large part, the success of the Mendeleev's analysis can be attributed to the gaps which he predicted would contain undiscovered elements with predictable properties. Mendeleev named these unknown elements using the terms eka, dvi & tri (1, 2 & 3 from the ancient Indian language of Sanskrit).

Mendeleev predictions include:

  • Eka-boron (scandium)
  • Eka-aluminium (gallium)
  • Eka-manganese (technetium)
  • Eka-silicon (germanium)

 

Image from van Spronsen

Top of Page

 

 

pre 1900 formulations 1900 to 1949 formulations 1950 to 1999 formulations post 2000 formulations Spiral formulations 3 dimensional formulations
Data mapping periodic tables Miscellaneous periodic tables Books and reviews non-chemistry periodic tables All periodic tables

 

 

Periodic Table, What is it showing?
Binary Compounds

© Mark R. Leach 1999-2009

Queries, Suggestions, Bugs, Errors, Typos...

If you have any:

Queries
Comments
Suggestions or periodic table representations not shown on this page
Suggestions for links
Bug, typo or grammatical error reports about this page,

please contact Mark R. Leach, the author, using mrl@meta-synthesis.com

This free, open access web book is an ongoing project and your input is appreciated.