Periodic Table |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
| What is the Periodic Table Showing? | Periodicity |
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).
| Year: 1932 | PT id = 1211, Type = formulation |
Bejerrum's Periodic Table
Bjerrum N, Inorganic chemistry, trans. (1936) from the 3rd Danish edition (1932) by N Bjerrum and RP Bell, William Heinemann, London
René Vernon observes:
- There are split blocks everywhere in Bjerrum's periodic system: s once; f once; d twice; p twice.
- As per old chemistry: B and Al are over Sc
- The group numbering is interesting: eight groups and eight sub-groups
- Bjerrum says the metals fall naturally into two groups: the light metals with a density below 4 gm/cm^3; the heavy metals with a density above 7 gm/cm^3, many of which form coloured salts
- Bjerrum refers to the transition metals as being those in subgroups 8a, 8b and 8c

![]() |
![]() |
![]() |
| What is the Periodic Table Showing? | Periodicity |
© Mark R. Leach Ph.D. 1999 –
Queries, Suggestions, Bugs, Errors, Typos...
If you have any:
Queries
Comments
Suggestions
Suggestions for links
Bug, typo or grammatical error reports about this page,please contact Mark R. Leach, the author, using mark@meta-synthesis.com
This free, open access web book is an ongoing project and your input is appreciated.






