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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.

Use the drop menus below to search & select from the more than 1300 Period Tables in the database: 

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Periodic Tables from the year 1886:

1886   Crookes' Periodic Table
1886   Discovery of Fluorine
1886   Discovery of Germanium
1886   Discovery of Dysprosium
1886   Shepard's Natural Classification
1886   Reynolds' Method of Illustrating the Periodic Law

Year:  1886 PT id = 81

Crookes' Periodic Table

From Quam & Quam's 1934 review paper.pdf

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Year:  1886 PT id = 798

Discovery of Fluorine


Fluorine, atomic number 9, has a mass of 18.998 au.

Fluorine exists as a pale yellow diatomic molecular gas, F2. It is the most electronegative and reactive of all elements: it which reacts with practically all organic and inorganic substances.

Fluorine was first observed or predicted in 1810 by A.-M. Ampére and first isolated in 1886 by H. Moissan.

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Year:  1886 PT id = 812

Discovery of Germanium


Germanium, atomic number 32, has a mass of 72.63 au.

Germanium was first isolated in 1886 by C. A. Winkler.

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Year:  1886 PT id = 846

Discovery of Dysprosium


Dysprosium, atomic number 66, has a mass of 162.5 au.

Dysprosium was first isolated in 1886 by P.E.L. de Boisbaudran.

Chronology of chemically the splitting of yttria (mixed oxides) into the pure rare-earth metals:

From: CRC Handbook on the Physics and Chemistry of Rare Earths, Chapter 248. Accommodation of the Rare Earths in the Periodic Table: A Historical Analysis
by Pieter Thyssen and Koen Binnemans (ISBN: 978-0-444-53590-0)

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Year:  1886 PT id = 1107

Shepard's Natural Classification

Shepard's Natural Classification of the Elements, a spiral formulation with instructions for turning it into a three-dimensional table. From: Elements of Inorganic Chemistry, Descriptive and Qualitative (pp221), by J. H. Shepard, (1886), Boston MA, pub. D. C. Heath

René Vernon writes:

Note the instructions along the side, to turn the table into a tube (spiral form) and the 19 spaces from La to eka-Ce. Here, Yb needs to be moved back one column into group II, so as to leave room for Lu under La. Then eka-Ce becomes Hf. This results in La + 15 lanthanoids.

The accompanying text says:

"Elements of most distinct basic character are found towards the left; non-metals predominate in the upper and middle parts of Groups V., VI., and VII. ; while the lower part of the table is marked by the more indifferent elements.

"A double spiral will be traced beyond Si (beginning with P and V respectively) and distinguished by heavy-face and light-face type.

"The harmony of nature here exhibited is most impressive. Is it possible that the so-called elements are really compounds? Did the various 'elements' of the earth and sun once exist as hydrogen, when our solar system was a nebula? And will modern chemists ever revive the famed problem of the alchemists, and seek to turn the base metals into gold? Far more precious than gold is the search for truth; and the more we learn of science, the broader becomes our conception of what we know in part, and the deeper should be our reverence for the infinite thought of the Creator."

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Year:  1886 PT id = 1108

Reynolds' Method of Illustrating the Periodic Law

Reynolds, J. E. (1886). Note on a method of illustrating the periodic law. Chemical News, 54, 1–4

Ann E. Robinson comments:

"Reynolds published a zig-zag version he created, noting it had been 'used in my lecture-room for some years in order to illustrate the periodic character of the relation between the atomic weights and properties of the chemical elements.'

>"Rather than a tabular form, Reynolds's form was a curve, best visualised as a string with seven knots tied in it at regular intervals, providing a 'vibrating system'. Although Reynolds's diagram is presented only as a two-dimensional picture, in a note he remarks that a friend suggested that the installation of 'a vibrating metallic chain, suspended from the ceiling and attached to the floor, would afford a more complete picture.'":

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What is the Periodic Table Showing? Periodicity

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