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Types of periodic tables

Theodor Benfey's arrangement is an example of a continuous (spiral) table. First published in 1964, it explicitly showed the location of lanthanides and actinides. The elements form a two-dimensional spiral, starting from hydrogen, and folding their way around two peninsulas, the transition metals, and lanthanides and actinides. A superactinide island is already slotted in.[1]

Since Dimitri Mendeleev formulated the periodic law in 1871, and published an associated periodic table of chemical elements, authors have experimented with varying types of periodic tables including for teaching, aesthetic or philosophical purposes.

Earlier, in 1869, Mendeleev had mentioned different layouts including short, medium, and even cubic forms. It appeared to him that the latter (three-dimensional) form would be the most natural approach but that "attempts at such a construction have not led to any real results."[2] On spiral periodic tables, "Mendeleev...steadfastly refused to depict the system as [such]...His objection was that he could not express this function mathematically."[3]

Typology

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In 1934, George Quam, a chemistry professor at Long Island University, New York, and Mary Quam, a librarian at the New York Public Library complied and published a bibliography of 133 periodic tables using a five-fold typology: I. short; II. long (including triangular); III. spiral; IV. helical, and V. miscellaneous.

In 1974 Edward Mazurs, a professor of chemistry, published a survey and analysis of about seven hundred periodic tables that had been published in the preceding one hundred years; he recognized short, medium, long, helical, spiral, series tables, and tables not classified.

In 1999 Mark Leach, a chemist, inaugurated the INTERNET database of Periodic Tables, currently with over 1200 entries. While the database is a chronological compilation, specific types of periodic tables that can be searched for are spiral and helical, 3-dimensional, and miscellaneous.

For convenience, periodic tables may be typified as either: 1. short; 2. triangular; 3. medium; 4. long; 5. continuous (circular, spiral, lemniscate, or helical); 6. folding; or 7. spatial. Tables that defy easy classification are counted as type 8. unclassified.

Short

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Newlands' 1866 table of octaves
Mendeleev's 1871 periodic table
Modern form of a short eight-group periodic table

Short tables have around eight columns. This form became popular following the publication of Mendeleev's eight-column periodic table in 1871.

Also shown in this section is a modernized version of the same table.

Mendeleev and others who discovered chemical periodicity in the 1860s had noticed that when the elements were arranged in order of their atomic weights there was as an approximate repetition of physiochemical properties after every eight elements. Consequently, Mendeleev organized the elements known at that time into a table with eight columns. He used the table to predict the properties of then unknown elements. While his hit rate was less than 50% it was his successes that propelled the widespread acceptance of the idea of a periodic table of the chemical elements.[4] The eight-column style remains popular to this day, most notably in Russia, Mendeleev's country of birth.

An earlier attempt by Newlands, an English chemist, to present the nub of the same idea to the London Chemical Society, in 1866, was unsuccessful;[5] members were less than receptive to theoretical ideas, as was the British tendency at the time.[6] He referred to his idea as the Law of Octaves, at one point drawing an analogy with an eight-key musical scale.

John Gladstone, a fellow chemist, objected on the basis that Newland's table presumed no elements remained to be discovered. "The last few years had brought forth thallium, indium, caesium, and rubidium, and now the finding of one more would throw out the whole system."[5] He believed there was as close an analogy between the metals named in the last vertical column as in any of the elements standing on the same horizontal line.

Fellow English chemist Carey Foster humorously inquired of Newlands whether he had ever examined the elements according to the order of their initial letters. Foster believed that any arrangement would present occasional coincidences, but he condemned one which placed so far apart manganese and chromium, or iron from nickel and cobalt.

The advantages of the short form of periodic table are its compact size and that it shows the relationships between main group elements and transition metal groups; its disadvantages are that it fails to accomodate the electron configuration arrangements of the elements and that it appears to group dissimilar elements such as chorine and manganese together.

Some other notable short periodic tables include:

1862   Meyer's system: 28 elements in 6 columns[7]
1895 Retger's Periodic Table: Intraperiodic accommodation of the rare earths (a)[8]
1902 Brauner’s table: Intraperiodic accommodation of the rare earths (b)[9]
1906 Mendeleev’s table: with six supposedly missing elements between H and He[10]
1923 Deming’s other table: Mendeleev style with dividing line between metals and nonmetals[11]
1924 Hubbard chart of atoms: American classic[12]
1935 Rysselberghe’s table: Separated blocks[13]
1945 Krafft’s table: Ten groups[14]
1950 Sidgwick’s classification (Mendeleeff): Lanthanides collocated; actinides fragmented[15]
1960 International Rectifier Corporation table: Rainbow style[16]
1975 Shukarev’s system: Transition metals turn back on themselves[17]
2011 Tresvyatskii's table: Assignment of lanthanides and actinides to groups[18]

Triangular

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A rendering of Bayley's periodic table of 1882[19]
A modernized triangular or step pyramid periodic table. Three kinds of bilateral symmetry are present: shape; metals and nonmetals in each half; and four block types in each half.

Triangular tables have column widths of 2-8-18-32 or thereabouts. An early example, appearing in 1882, was provided by Bayley.[20]

Through the use of connecting lines, such tables make it easier to indicate analogous properties among the elements.

In some ways they represent a form intermediate between the short and medium tables, since the average width of the fully mature version (with widths of 2+8+18+32 = 60) is 15 columns.

An early drawback of this form was to make predictions for missing elements based on considerations of symmetry. For example, Bayely considered the rare earth metals to be indirect analogues of other elements such as, for example, zirconium and niobium, a presumption which turned out to be largely unfounded.[21]

Advantages of this form are its aesthetic appeal, and relatively compact size; disadvantages are its width, the fact that it is harder to draw, and interpreting certain periodic trends or relationships may be more challenging compared to the traditional rectangular format.

Some other notable triangular periodic tables include:

1895   Thomsen’s systematic arrangement: Electropositive and electronegative elements labelled[22]
1911 Adam's table: Separation of lanthanides (left) and radioactives (right)[23]
1922 Bohr's system: Based on modern atomic theory[24]
1935 Zmaczynski’s table: Period 0 above H-He[25]
1949 Antropoff’s representation revised by Fritz Scheele: Lanthanides and actinides included in main body[26]
1952 Coryell’s table: Bifurcating groups limited to 3 and 13[27]
1967 Sanderson's table: 2-8-10-14 stacked periods[28]
1987 Step-pyramid form of the periodic chart: Modernised version of 1882 Bayley[29]
1989 Seaborg’s electron shell table: Up to Z = 168[30]
1995 Klein's table: Breaks at the start of each new block[31]

Medium

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Deming's periodic table of 1923[32]
A modern periodic table colour-coded to show some common or more commonly used names for sets of elements. The categories and their boundaries differ somewhat between sources.[33] Lutetium and lawrencium in group 3 are also transition metals.[34]

Medium tables have around 18 columns. The popularity of this form is thought to be a result of it having a good balance of features in terms of ease of construction and size, and its depiction of atomic order and periodic trends.[35]

Deming's version of a medium table, which appeared in the first edition of his 1923 textbook "General Chemistry: An Elementary Survey Emphasizing Industrial Applications of Fundamental Principles", has been credited with popularizing the 18-column form.[36][n 2]

LeRoy[37] referred to Deming's table, "this...being better known as the 'eighteen columns'-form" as representing "a very marked improvement over the original Mendeleef type as far as presentation to beginning classes is concerned."

Merck and Company prepared a handout form of Deming's table, in 1928, which was widely circulated in American schools. By the 1930s his table was appearing in handbooks and encyclopedias of chemistry. It was also distributed for many years by the Sargent-Welch Scientific Company.[38][39][40]

The advantages of the medium form are that it correlates the positions of the elements with their electronic structures, accommodates the vertical, horizontal and diagonal trends that characterise the elements;, and separates the metals and nonmetals; its disadvantages are that it obscures the relationships between main group elements and transition metals.

Some other notable medium tables include:

1920   Stewart’s arrangement: The lanthanides accommodated in its 18 columns[41]
1945 Seaborg's table: Suggested an actinide series to complement the lanthanides[42]
1956 Remy’s “long” period form: Uranides competing with Seaborg’s actinides[43]
1976 Seaborg’s futuristic table: Elements up to Z = 168[44]
1980 Jodogne’s tableau: Upside down[45]
1990 IUPAC Red Book table: 15-wide f-block[46]
2002 Inorganic chemist’s table: Major and minor patterns indicated.[47]
2006 Scerri’s table: Symmetrical[48]

Long

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Left step periodic table with 33rd shadow column
The blocks in this long table follow the conventional order: s-, f-, d- and p-

Long tables have around 32 columns. Early examples are given by Bassett (1892),[49] with 37 columns arranged albeit vertically rather than horizontally; Gooch & Walker (1905),[50] with 25 columns; and by Werner (1905),[51] with 33 columns.

In the first image in this section, of a so-called left step table:

  • Groups 1 and 2 (the s-block) have been moved to the right side of the table.
  • The s-block is shifted up one row, thus all elements not in the s-block are now one row lower than in the standard table. For example, most of the fourth row in the standard table is the fifth row in this table.
  • Helium is placed in group 2 (not in group 18).

The elements remain positioned in order of atomic number (Z).

The left step table was developed by Charles Janet, in 1928, originally for aesthetic purposes. That being said it shows a reasonable correspondence with the Madelung energy ordering rule this being a notional sequence in which the electron shells of the neutral atoms in their ground states are filled.

A more conventional long form of periodic table is included for comparison.

The advantage of the long form is that shows where the lanthanides and actinides fit into the periodic table; its disadvantage is its width.

Some other notable long tables include:

1892   Bassett’s vertical arrangement: 37 columns sideways[52]
1905 Gooch & Walker’s system: 25 columns[53]
1905 Werner’s arrangement: 33 groups[54]
1927 LeRoy’s table: Left step precursor; three sets of transition elements[55]
1928 Corbino’s right-step table: No gaps between elements[56]
1934 Romanoff's system: First long form with actinides under lanthanides (including a split d-block)[57]
1964 Ternstrom’s A periodic table: A triple-combo table drawing on the advantages of the complete block system according to Werner (1905) and a horizontal Bohr line-system; the outcome resembles the left step form of Janet (1928)[58]
1982 Periodiska systems rätta form: Left step variation with novel placement of H-He[59]
2002 Tabla Periódica de Los Elementos Químicos-Forma Armonica - Sistema A-2 (Periodic Table of Chemical Elements-Harmonic Form): Left step variation in which groups 1 and 2 are redistributed[60]
2018 Beylkin’s table: Symmetrical table with lanthanides and actinides incorporated[61]

Continuous

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A circular periodic table

Encompassing circular, spiral, lemniscate, or helical tables.

The Crookes' lemniscate periodic table shown in this section has the following elements falling under one another:

H He Li Gl B C N O F Na Mg Al Si P S
Cl Ar K Ca Sc Ti V Cr Mn·Fe·Ni·Co Cu Zn Ga Ge As Se
Br Kr Rb Sr Yt Zr Nb Mo Rh·Ru·Pd Ag Cd In Sn Sb Te
I Cs Ba La Ce (  ) (  ) (  ) (  ) (  ) (  ) (  ) (  ) (  )
(  ) (  ) (  ) (  ) (  ) Ta W Ir·Pt·Os (  ) (  ) (  ) (  ) (  ) (  )
Th Ur

The collocation of manganese with iron, nickel and cobalt is later seen in the modernised version of von Bichowsky's table of 1918, in the unclassified section of this article.

A continuous two-dimensional periodic pyramid[62]
Crookes' lemniscate (figure eight) periodic table of 1898[63]
A helical table

The French geologist, Alexandre-Émile Béguyer de Chancourtois was the first person to make use of atomic weights to produce a classification of periodicity. He drew the elements as a continuous spiral around a metal cylinder divided into 16 parts.[64] The atomic weight of oxygen was taken as 16 and was used as the standard against which all the other elements were compared. Tellurium was situated at the centre, prompting vis tellurique, or telluric screw.

The advantage of this form is that it emphasizes, to a greater or lesser degree, that the elements form a continuous sequence; that said, continuous tables are harder to construct, read and memorize than the traditional rectangular form of periodic table.

Some other notable forms of continuous periodic tables include:

1867 Hinrichs’ programme of atomechanics: Captures many of the primary periodic relationships seen in the modern table while not being cluttered by attempts to show secondary relationships[65]
1886   Shepard’s natural classification: A spiral form with instructions for turning it into a tube[66]
1905 Gooch & Walker's primary, secondary, and tertiary series of elements: An early depiction of double periodicity among the Ln[67]
1914 Hackh’s periodic table: First spiral to take account of Mosley's atomic numbers, and the first to show successively larger pairs of coils. Also interesting as H stands alone in the centre[68]
1925 Courtines’ a model of the periodic table: A helix with the appearance of a submarine[69]
1939 Irwin’s periodic tableExtensive analysis of periodicity patterns[70]
1940 Gamow [first] ribbon periodic table Noble gases as Group 0[71]
1965 Alexander arrangement of elements: Designed to complement the point at which education on the arrangement of atoms into a chart begins, much as the world globe establishes the reality, and to emphasise the vital and convenient nature of flat printed projections or maps[72]
1999 Moran’s spiral periodic table: In hexagonal form[73]
2003 Chemical galaxy II: Starry pathway to link the elements, express the astronomical reach of chemistry, stimulate the imagination and evoke wonder at the order underlying the universe[74]

Folding

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McCutchon's periodic table of 1950, with two double-sided flaps attached. The top flap shows the first half of the f-block. The flap under that shows the first half of the d- block.[75]

Such tables, which incorporate a folding mechanism, are relatively uncommon:

1895   An early example is the 'Flap’ Model of the periodic table by David Orme Masson.[76]
1915 William Ramsay, in his book The Gases of The Atmosphere, included a periodic table with a fold (or flap) that can be moved from page 220 to 221.[77][78]
1950 McCutchon published a short table in which the d- and f-blocks were depicted as folding flaps positioned on top of the s- and p-blocks.[75]
2015 Quantum Fold Periodic Table.[79]
2016 A left step periodic table in the traditional Japanese "byobu" style.[80]
2022 A hexaflexagon periodic table.[81]

The advantages of such tables are their novelty and that they can depict relationships that ordinarily require spatial periodic tables, yet retain the portability and convenience of two-dimensional tables. A disadvantage is that they require marginally more effort to construct.

Spatial

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A periodic table having the appearance of a multi-layered cake. There are eight wooden layers that sit on top of one another and can be rotated. Layers are divided into chemical elements with the engraved element name and atomic number.[82]

Spatial tables pass through three or more dimensions (helical tables are instead classed as continuous tables). Such tables are relatively niche and not as commonly used as traditional tables. While they offer unique advantages, their complexity and customization requirements make them more suitable for specialized research, advanced education, or specific areas of study where a deeper understanding of multidimensional relationships is desired.

Advantages of periodic tables of three or more dimensions include:

  • Enhanced visualization. Such tables provide a unique and enhanced visualization of the elements and their properties. By incorporating additional dimensions, such as depth or multiple axes, these tables offer a more comprehensive representation of the periodic trends and relationships among the elements. They can provide a richer understanding of complex patterns and interactions.
  • Inclusion of extra properties: Traditional periodic tables typically focus on a few key properties, such as atomic number and atomic weight. However, periodic tables of three or more dimensions have the potential to include additional properties, such as electronegativity, ionization energy, electron affinity, or physical properties like boiling point or melting point. This expanded information can offer a more complete picture of the elements and their characteristics.
  • Exploration of higher-level trends: Such tables can facilitate the exploration of higher-level trends and relationships that may not be apparent in traditional two-dimensional tables. They allow for the visualization of complex patterns that emerge when multiple properties or variables are considered simultaneously. This can aid in uncovering hidden connections and correlations among the elements.
  • Flexibility and customization: Periodic tables of three or more dimensions offer flexibility in terms of their design and customization. Researchers, educators, or scientists can adapt the dimensions and properties represented based on their specific needs and objectives. This adaptability allows for tailoring the table to focus on specific areas of interest or research.

Disadvantages are:

  • Complexity: As the number of dimensions increases, the complexity of interpreting and understanding the table also increases. It can become more challenging for individuals to grasp and visualize the relationships between elements, especially when multiple properties are incorporated. The intricate nature of these tables may require additional effort and familiarity to navigate and interpret effectively.
  • Difficulty in representation: Depicting periodic trends and relationships in three or more dimensions can be technically challenging. Designing and visualizing the table in a clear and coherent manner may require specialized software or tools. The complexity of these tables can make them less accessible for individuals who are not familiar with the specific representation or visualization techniques used.
  • Information overload: The inclusion of multiple dimensions and properties can lead to information overload, especially if the table is not designed in a user-friendly and organized manner. It becomes crucial to effectively organize and present the data to avoid overwhelming users with excessive details. Striking a balance between comprehensive information and clarity can be a significant challenge.
  • Lack of standardization: Periodic tables of three or more dimensions are not as standardized or widely recognized as traditional two-dimensional tables. This lack of standardization can create confusion and inconsistency across different representations. It can also make it more difficult to compare and communicate information between different periodic table formats.

Some other notable spatial periodic tables include:

1920   Kohlweiler’s system: First spatial system—Parallel planes connected by pillars of transition group and lanthanide element[83]
1925 Friend’s periodic sphere: First spherical form[84]
1945 Talpain’s gnomonic classification of the elements: Diagram in space having the form of a double pyramid[85]
1949 Wringley's Lamina System: First 2D/3D hybrid[86]
1954 Sabo & Lakatosh’s volumetric model of the periodic table: Modular apartment building complex form[87]
1965 Giguère’s periodic table: Weather vane form[88]
1972 Octagonal prismatic periodic table: Like it says[89]
1982 Cement chemist’s periodic cube: Say no more[90]
1983 Periodic pyramid: Like it says.[91]
1989 Stowe’s A physicist’s periodic table: 4-dimensional[92]
1990 Dufour’s periodic tree: Like it says[93]
1992 Magarshak & Malinsky’s three-dimensional periodic table: Quantum mechanics-based table with group 3 as Sc-Y-La-Ac[94]
2003 Graphic representations of the periodic system: As a building[95]
2003 Two-amphitheatre pyramid periodic table: Like it says[96]
2011 Aldersley 3D periodic table:As four apartments[97]
2014 ADOMAH Periodic table glass cube: A separated table inside a tetrahedron inside a cube[98]
2019 Grainger’s elemental periodicity with “concentric spheres intersecting orthogonal planes” formulation: A table in or on the corner of a room or table[99]

Unclassified

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This table, which is a modernised version of von Bichowsky's table of 1918,[100] has 24 columns and 9½ groups. Group 8 forms a connecting link or transitional zone between groups 7 and 1.

Unclassified periodic tables defy easy classification:

1891   Wendt’s generation-tree of the elements: You have to see it to understand it[101]
1893 Nechaev’s truncated cones: Like it says[102]
1907 Grouping of the elements to illustrate refractivity: Runs from group 12 on the left to group 13 on the right[103]
1918 Cherkesov: Two periodic tables: Mn in group 8 rather than group 7[104]
1920 Stewart’s arrangement of the elements: With 14 lanthanides incorporated[105]
1934 Romanoff's system: Combined spiral-lemniscate[106]
1944 Müller’s tree system: Like it says[107]
1950 Clark’s updated periodic table: Arena system[108]
1971 Clark, John O. E. periodic table: Inspired by the trippy 60s?[109]
2005 Rich’s periodic chart exposing diagonal relationships: Non-metals of the left; metals on the right[110]
2018 Beylkin’s periodic table of the elements:4n2 periods, where n = 2,3..., and shows symmetry, regularity, and elegance, more so than Janet’s left step table[111]
2019 Alexander arrangement unwrapped... and rewrapped: p, d and f blocks moving away from the s block in 3-dimensional space[112]
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Notes

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  1. ^ These elements are generally regarded as being too diverse to merit a collective classification and, in this context, have been referred to as other nonmetals or, more plainly, as nonmetals, located between the metalloids and the halogens.
  2. ^ An antecedent of Deming's 18-column table may be seen in Adams' 16-column Periodic Table of 1911. Adams omits the rare earths and the "radioactive elements" (i.e. the actinides) from the main body of his table and instead shows them as being "careted in only to save space" (rare earths between Ba and eka-Yt; radioactive elements between eka-Te and eka-I). See: Elliot Q. A. (1911). "A modification of the periodic table". Journal of the American Chemical Society. 33(5): 684–88 [687].

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Further reading

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  • Blokh MA 1934, Iubileinomu mendeleevskomu s'ezdu v oznamenovanie 100-letnei godovshchinyso dnia rozhdeniia D. I. Mendeleeva (Anniversary Mendeleev Congress in commemoration of the 100th anniversary of the birth of D. I. Mendeleev), in Russian, Akad. Nauk SSSR, Leningrad
  • Mazurs EG 1974, Graphic Representations of the Periodic System During One Hundred Years, University of Alabama Press, Alabama, ISBN 978-0-8173-3200-6
  • Quam GN & Quam MB 1934, Types of graphic classifications of the elements I. Introduction and short tables, Journal of Chemical Education, vol. 11, no. 1, pp. 27–32, doi:10.1021/ed011p27
  • id., Types of graphic classifications of the elements II. Long charts, Journal of Chemical Education, vol. 11, no. 4, pp. 217–223, doi:10.1021/ed011p217
  • id., Types of graphic classifications of the elements III. Spiral, helical, and miscellaneous charts, Journal of Chemical Education, vol. 11, no. 5, pp. 288–297, doi:10.1021/ed011p288
  • Robinson A 2018, Creating a Symbol of Science: The Development of a Standard Periodic Table of the Elements, Doctoral Dissertations (1385), University of Massachusetts, Amherst
  • Semenov NN 1969, 100 лет периодического закона химических элементов. 1869-1969 (100 years of the periodic law of chemical elements. 1869-1969), in Russian, Nauka, Moscow
  • Venable FP 1896, The Development of the Periodic Law, Chemical Publishing Co., Easton, PA
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