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| 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: 1911 | PT id = 1296, Type = formulation |
Emerson's Periodic Table of Atomic Weights
Emerson BK, Helix chemica: A study of the periodic relations of the elements and their graphic representation, American Chemical Journal, vol. 45, pp. 160–210 (1911). The formulation below appears on page 173; a scanned pdf version of the paper can be viewed here.
René Vernon writes:
Emerson includes two elements before hydrogen: "E" (either the luminiferous ether or the electron) and "Coronium". There are also two elements between hydrogen and helium: "Nebulium" and "Protofluorine".
This is the first time I have seen a PT showing four extra elements and where they are supposed to fit.
After La, Emerson incorporates 13 lanthanides (Ce to Lu) as transition elements into his 7th period.
Emerson missed dysprosium, between Tb and Ho.
"A, B and C" at the bottom right are supposed to be 'halogen emanations'.
Mark Leach adds that Emerson's very odd Periodic Table of Atomic Weights does not actually show any atomic weights.
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| What is the Periodic Table Showing? | Periodicity |
© Mark R. Leach Ph.D. 1999 –
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