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:
- By Decade
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Best Four Periodic Tables for Data All Periodic Tables by Name All Periodic Tables by Date All Periodic Tables by Reverse Date All Periodic Tables, as Added to the Database All Periodic Tables, reverse as Added Elements by Name Elements by Date Discovered Search for: Mendeleev/Mendeléeff Search for: Janet/Left-Step Search for: Eric Scerri Search for: Mark Leach Search for: René Vernon Search for: Electronegativity
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The 10 Periodic Tables most recently added to the database:
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'?
World's Largest Periodic Table Created on ECU's Science Building
"The new science building at Edith Cowen University (ECU), Joondalup Campus in Perth stands out for its striking façade, which features the world's largest periodic table. The thoughtful design by Silver Thomas Hanley Architects responded to the brief to deliver a bold and sophisticated architectural statement in the urban setting. The façade featuring the periodic table celebrates the building's purpose as a centre of scientific research and learning. Based on the university vice chancellor Professor Steve Chapman's idea, the periodic table is an enormous 662 square metres, spanning the entire front façade of the building."
Thanks to Eric Scerri for the tip!
USA as Periodic Table Infographic
An periodic table inspired infographic of the USA (from CNN):
Cubical-Stair Periodic Table
Sarthak Gupta's Cubical-Stair Periodic Table (Into a Whole New Dimension):
"Looking at the Modern periodic Table, somethings always bug you. The huge gap between the s and p-block when they should be side by side. The whole f-block floating around in air when it should be there in period 6 and 7. So why not experiment with shapes and structures and come up with something more space efficient?
"The cubical Periodic table paves the way taking the periodic table into a whole new dimension. Yes! from the 118 squares, we are going to transition into 67 cubes stacked onto each other like stairs."
The Cubical-Stair Periodic Table Explained:
- The table is made up of 67 cubes stacked onto each other, having three sides exposed(top, left and right)
- The top faces contain s and p-block elements
- The left side faces contain d block and right side faces contain f block
- There are two different Major Groups: A and B
- Major Group A is divided into 14 minor groups (from -1 to 12) and Major group B is divided into 8 minor groups (from 3 to 12)
- Major Group A applies to s, p & f-block. Major Group B is exclusively for d-block.
- To go down a group we follow the arrow and descend the stair in the given direction
Advantage over the Modern PT
- Although being 3 dimensional, it can be easily represented in 2 dimensions in the form of trisected hexagons
- All the elements of the same period lie in the same line (unlike MPT where f-block elements had to be depicted separately due to lack of space).
- Viewing the table from 3 different directions makes only one or two blocks visible:
1. From top: s & p-block
2. From left: d-block
3. From right: f-block
- This helps in diffrentiating between the blocks easily
- The disturbing gap between s and p-block of traditional periodic table is not simply there. All advantages of Modern Periodic Table remain conserved.
Vernon's CSF Left-Step Periodic Table.
René Vernon's CSF Left-Step Periodic Table.
"I was prompted to switch to He-Be and [to develop a Janet type] left-step periodic table. I suggest it remediates concerns about H and He, and Lu in group 3.
- There is symmetry in this version.
- The physiochemical relationship of He to Ne is retained.
- There is a loss of physiochemical regularity in placing He over Be. Even if helium can be enticed to become chemically active, it will still be very much better located in group 18.
- While the d, p, and s blocks start with the appearance of the relevant electron, there is a loss of consistency with La at the start of the f-block. This is confusing to students since there is no such inconsistency in the La form.
- In terms of predominant differentiating electrons in each block, this form is less consistent than an La table.
- There is one less form of "element block-type" symmetry, than in the La form.
Beylkin's Periodic Table of The Elements
Beylkin (an applied mathematician) writes:
"Let us take a continuous strip of paper and, on one side of the strip, write all the elements in the order of their atomic numbers. We then form a spiral with the strip such that the two most chemically distinct groups, the group of halogens (in which we include hydrogen) and the group of noble gases, are properly aligned. By flattening the strip on a plane and folding it in the middle, we obtain the new periodic table..."
- H is over F, which is a smoother fit in terms of physicochemical trends down the group
- He is over Ne, which is a smoother fit etc
- group 3 has lanthanum in it
- the modern relationships Ti-Zr-Hf, V-Nb-Ta, Cr-Mo-W, and Mn-Tc-Re can still be traced
- the lanthanides and actinides are integrated into the main body of the table
- 15 lanthanides and 15 actinides(!)
- the old school arrangement of B-Al-Sc-Y-La can still be traced, as can the less smooth alternative B-Al-Sc-Y-Lu
- the 1s "block" starts at H; the s block proper at Li; p at B; d at Sc; f at Ce
There are four new(ish) groups: Ti-Zr-Ce-Th, V-Nb-Pr-Pa, Cr-Mo-Nd-U and Mn-Tc-Pm-Np. For the actinide elements of these groups, the resemblance of the earlier actinides to their lighter transition metal congeners is well known. For the lanthanide elements, Johansson et al. (2014) wrote a nice article about Ce and its cross-road position. For Pr, Nd, and Pm, all of these are known in multiple oxidations states (+2, +3, +4 excl. Pm, and +5 for Pr only), just as the transitions metals are so known.
- Beylkin G 2018, The periodic table of the elements with 4n2 n = 2,3... periods, https://arxiv.org/pdf/1901.02337.pdf
- Eric 2006, https://www.meta-synthesis.com/webbook/35_pt/pt_database.php?PT_id=20
- Johansson, B., Luo, W., Li, S. et al. 2014, Cerium; crystal structure and position in the periodic table. Sci Rep 4, 6398. https://doi.org/10.1038/srep06398
- Gregory Beylkin: https://en.wikipedia.org/wiki/Gregory_Beylkin
Orthogonal Dimension Periodic Table
Novel Visualization of the Periodic System of Elements. The Orthogonal Dimension. Click here to read the paper.
ABSTRACT: The Periodic system of elements is presented in a novel way such that rare earth and actinides, and the triads Fe/Co/Ni, Ru/Rh/Pd, Os/Ir/Pt, and Hs/Mt/Uun, are shown orthogonal within the table, and not separately as accompanying rows. The new graphic presentation facilitates the visual orientation, eliminates the now prevailing crunching of the elements in the middle of the table, and avoids the cognitive confusion of scattered positioning of the <<a>> and <<b>> element subgroups sometimes widely separated within the same row. A characteristic meandering pattern emerges whenever switch occurs between the horizontal and orthogonal dimension of the Periodic system; the inner meaning of these switches remains to be elucidated.
Map of Fundemental Particles
Domain of Science is produced by physicist Dominic Walliman who is on a quest to make science as easy to understand as possible.
Coronavirus, Periodic Table of: Elements of a Year We'll Never Forget
Thanks to Eric Scerri for the tip!
Fajans' Periodic Table
Fajans K., Radioactivity and the latest developments in the study of the chemical elements, trans. TS Wheeler, WG King, 4th German edition, Methuen & Co., London, pp. 116-117, 1923.
René Vernon writes: "An addition to the long list of tables with B-Al over Sc."
|What is the Periodic Table Showing?||Periodicity|
© Mark R. Leach Ph.D. 1999 –
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