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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 1100 Period Tables in the database:

  Text Search:       


The 10 Periodic Tables most recently added to the database:

2022   Kaleidocycle of the Periodic Table
2022   Kudan's Left-Step Periodic Table (Short Form)
2022   Kudan's Left-Step Periodic Table
2022   Hutcheon's Animated Formulation(s) of The Periodic Table
1956   Remy's Periodic Table II: The Short Period Presentation
2021   The Periodic Table: Is it Perfect, is it Fractured or is it Broken?
2021   Hutcheon Right Step Periodic Table
2021   Quantum Periodic Table
2021   Rolled-up Version of Benfey's Periodic System
2016   Genoma de la Materia


2022

Kaleidocycle of the Periodic Table

Pablo Cassinello provides a "Three-dimensional figure to improve the didactics of the Periodic Table", a Kaleidocycle of the Periodic Table.

There is a full article about this dynamic, three dimensional formulation in Pablo's blog in Chem Ed Xchange, including instructions on how to make the object.

Pablo writes:

"A kaleidocycle has four different faces, each one made of a juxtaposition of rhombuses. By turning it you can easily choose one of the four faces. On these, four different pictures can be displayed. In this three-dimensional figure of the periodic table are the elements organized in four blocks according to their final electronic structure. It is intended that students with this playful figure actively participate in classes by rotating their kaleidocycle looking for the groups or elements that are being studied. The entire periodic table fits in one palm of their hands. It is also a didactic device because students only focus their attention on one block or group of elements from the entire Periodic Table. It can be a more entertaining, motivating and exciting way of learning about the subject of the Periodic Table."

Thanks to René for the tip!

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2022

Kudan's Left-Step Periodic Table (Short Form)

From Pavel Kudan, a specialist in mass-spectrometry and identification of compounds., who suggests a short-form variant of his left-step Periodic table:

1. Energy barriers directly shown to express correctly the Periodic Law
2. 4 periods (8 half periods)
3. 21 groups (1a-8a, 2b-8b, 3c-8c)
4. F-elements classified by groups, not families
5. La/Ac and Lu/Lr both in 3rd group
6. Cu/Ag/Au/Rg in group 8b together with Ni/Pd/Pt/Ds
7. Reminders for H to group 7a, He to group 8a, Cu/Ag/Au/Rg to group 1b

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2022

Kudan's Left-Step Periodic Table

From Pavel Kudan, a specialist in mass-spectrometry and identification of compounds., who suggests a variant of the left-step Periodic table:

1. Energy barriers directly shown to express correctly the Periodic Law
2. 4 periods (8 half periods)
3. 21 groups (1a-8a, 2b-8b, 3c-8c)
4. f-elements classified by groups, not families
5. La/Ac and Lu/Lr both in 3rd group
6. Cu/Ag/Au/Rg in group 8b together with Ni/Pd/Pt/Ds

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2022

Hutcheon's Animated Formulation(s) of The Periodic Table

A very cool animated periodic table that shows the PT morphing between various formulations. Read more on Scott's Linkedin Page.

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1956

Remy's Periodic Table II: The Short Period Presentation

Next to Remy's Long Form Periodic Table (H. Remy, Treatise on Inorganic Chemistry, Vol. 1, Introduction and main groups of the periodic table, Elsevier, Amsterdam, 1956, p. 4) is what Remy calls a "Short Period presentation" shown in the appendix, pages 838-939. The author comments:

"The form of presentation used in Table II in which the elements of the Long Periods are divided into two series, so that the short Periods determine the horizontal breadth of the system, is known as the Short Period presentation, as contrasted with the Long Period presentation in which the elements of the Long Periods are each time included in a single series.

"The Short Periods can then be broken up accordingly. Mendeléeff had already used the short-periodic and long-periodic mode of tabulation. The adjacent Table I sets it out as a form which is based directly on that already used by Mendeléeff, but completed by the insertion of the elements discovered subsequently."

Click to enlarge:

Thanks to Mark Winter of WebElements for the tip!

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2021

The Periodic Table: Is it Perfect, is it Fractured or is it Broken?

A video from Mark Leach, who writes:

The periodic table is an icon of science. Indeed, all chemical matter is made from periodic table stuff. The periodic table of 118 elements is often presented as being: (a) complete, (b) 'perfectly' described by the application of four quantum numbers with the application of some simple rules and (c) chemical structure & reactivity can be deduced from the periodicity of the Groups & Periods. However, the chemistry of the chemical elements is a little more involved than this. So, where & why does the predictability 'break'?

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2021

Hutcheon Right Step Periodic Table

From Scott Hutcheon's Linkedin Website:

Abstract:

"Built from first principles, the RSPT is the only Periodic Table (so far) that reflects the periodicity of radioactive elements (natural and artificial) including Tc-Np and Cf/Es, the periodicity of liquids and gases (at standard and other conditions), depicts the 5 and 8 mass roadblocks, and finally clarifies the positions of the initial propagating elements H, He, and Li-Be/B in accordance with their cosmic and stellar evolutionary origins.

"Name inspired by the Janet Left Step Periodic Table (LSPT).

"Bonus Easter Egg: SPOCH BONSe, pronounced Spock Bones, is a new mnemonic device to remember the updated elements considered most essential for human life. Also considered POSCH SeNOB and SNOBS ePOCH."

Click PT image to enlarge:

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2021

Quantum Periodic Table

Shriya Tiwari & D. K. Awasthi, Quantum Periodic Table, wjpmr, 2021, 7(4), 124-130

The authors write:

"In [the] quantum periodic table, The elements are arranged according to the order of electron-shell filling, by classifying the energy levels of the atoms in the order they are filled, to create a layout based on electronic configuration. The classification of the elements is done purely on the basis clarified above, without giving any weight age to the atomic numbers. With the advent of electronic configurations and quantum mechanics, many attempts have been tried in this periodic table to unlock all the problems related with the placement of elements, which have been remained as the topic of debate by generations of chemists."

Read more in the paper here.

Click PT image to enlarge:

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2021

Rolled-up Version of Benfey's Periodic System

Rolled-up Version of Benfey's Periodic System by Julio Antonio Gutiérrez Samanez. More on the YouTube video here.

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2016

Genoma de la Materia

By Julio Antonio Gutiérrez Samanez, Genome of Matter:

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –


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