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Alexander Arrangement of Elements Periodic Table

/Users/soula/Wikipedia/WIKIAAEImages/Alexander Arrangement of Elements Model with Theodore Gray photos.jpg

Description of the Alexander Arrangement This version of the periodic table of elements is a tabular matrix of the data representing the chemical elements organized by certain properties of their atoms, and looped into a 3-D shape. The element sequence is arranged horizontally in a single row, and other relationships between element data boxes are either vertically or diagonally adjacent. The single row is possible because the data boxes are slanted in one segment, with wrapping and folding permitting the end of one period to be horizontally adjacent to the first of the next period and retaining all other kinships – groups, families, triads, diads, etc. The three dimensions of the Alexander Arrangement reflect the spiral 3-D representation by Alexandre-Emile de Chancourtois’ table, the first displaying element periodicity. Both adhere to Dimitri Mendeleev’s Periodic Law; "...if all the elements be arranged in order of their atomic weights a periodic repetition of properties is obtained". The overwhelming majority of 2-D periodic tables are a necessity for chemists and advanced students, as all the data is visible at one time, regardless of the gaps and breaks, and can readily be adapted for different properties. The Alexander Arrangement, however, a descendent of the first periodic table, with an unbroken sequence of element data boxes, is thought by some to be important in the introduction of the periodic table concept to new science students and the lay public, for understanding and acceptance of the discontinuities of flat representations.

Alexander Arrangement Periodic Table Structure Employing an identical data matrix format, an added dimension is the only difference between a 3-D Alexander Arrangement of Elements and most of the others that remain flat on the printed substrate. Initially printed flat, most element blocks of the Alexander Arrangement bend into loops, and folds mark the ends of most of them as well as ends of the periods. In the p-block there is a downward slant (part of a spiral, or helix), where data boxes are parallelograms instead of rectangles like the rest, to bring the end of each period of elements to connect to the first of the following period. In the case of the first period, the two elements wide s-block, the data box for hydrogen is elongated to loop and link side-to-side or at a corner with helium, fluorine, beryllium, neon, and carbon as well as lithium, plus other elements of the periodic table in more general way by floating above them.

/Users/soula/Wikipedia/AAE in Wikipedia/AAE_6_rev.2.jpg Alexander Arrangement Periodic Table Educational Rationale Beginning students introduced to the periodic table using the Alexander Arrangement is thought to attract and facilitate entry to the study of chemistry, and expected to improve student acceptance of the necessary and convenient flat forms of the periodic table. The defacto (flat) periodic table, as the American Chemistry Society notes; “At first glance...looks like a mere series of boxes, with letters and numbers in them, arranged according to some kind of code not immediately clear to the observer. The boxes would form a rectangle, 18 across and 7 deep, but there are gaps in the rectangle, particularly along the top. To further complicate matters, two rows of boxes are shown along the bottom, separated from one another and from the rest of the table”, and as James Elkins says in his book How to Use Your Eyes; “...the standard periodic table...serves many purposes well, but is also full of drawbacks...there is a big gap at the top, as if a chunk had been taken out of it. And at the bottom there are two extra strips of elements that could not be fitted onto the table." Understandable confusion in the minds of new students by the obvious discontinuities of the iconic flat table, coupled with the departure from the “arranged in order” part of the Periodic Law may be a deterrent to the acceptance of the validity of a flat table, plus feed into anti-science feeling in the general public – not to mention the oft stated observation that the periodic table is the epitome of difficulty in education.

Other 3-D Periodic Tables Several respected scientists, a science philosopher, a science exhibit designer and others revived the dimensionality of the de Chancourtois 3-D periodic table concept in the 20th Century.  Some have started with a ribbon of elements in atomic number sequence and wrapped it in a spiral to vertically align elements with similar properties, which establishes the ‘periodic’ nature of the table.   Others may have merely wrapped the plane of the flat table - after ramping the element rows – escalator-like – in the p-block - and let the post-Emile/Dmitri element blocks loop to allow a perfect atomic number sequence.   The philosopher, Scerri, wished to correct the popular opinion that Mendeleev was the originator of a periodically based table. Some may have been seeking to resolve technical questions. Others, like Courtines, Gamov and Alexander, were aiming for a better educational tool. /Users/soula/Wikipedia/AAE in Wikipedia/3-D_20thCentury3.jpg

AAE references:

AAE representation of the periodic table World of the Elements: Elements of the World book by Hans-Jürgen Quadbeck-Seeger ISBN13: 9783527320653  ISBN10: 3527320652

AAE in global collection of periodic tables Internet Database of Periodic Tables meta-synthesis.com Periodic Tables: 1950-1999 http://www.meta-synthesis.com/webbook/35_pt/pt_database.php?PT_id=21 “...Alexander "DeskTopper" Arrangement, plus lots of...”

AAE as culmination of periodic table history Student online newspaper article montessorimuddle.org The History of the Periodic Table | Montessori Muddle montessorimuddle.org/2011/11/22/the-history-of-the-periodic-table/ Nov 22, 2011 – Fitted to a cylinder, the elements on this periodic table

Purchase of PeriodicTable.com domain name from AlexanderDESIGN by Theodore Gray Toledo Free Press newspaper article toledofreepress.com toledofreepress.com/tag/theodore-gray/ Mar 16, 2011 – “...arrangement of the periodic table called the Alexander Arrangement, ...”

Periodic table images and links (page 3, ”Alexander”, ”Detailed answer”. page 6 ”Images of”.) Image collection with links website images.mitrasites.com Images of Alternative Periodic Tables - Mitra Images :: Image ... images.mitrasites.com/alternative-periodic-tables.html “best of today's Periodic Tables is, by far, the Alexander Arrangement of...”

An application of one version of the AAE the AAE DeskTopper as a pen/pencil caddy chemistry.about.com Three-Dimensional Periodic Table chemistry.about.com/od/periodictables/ig/Periodic-Tables/Alexander-Arrangement.htm “...intended to clarify trends and relationships between the elements.”

Interactive Chemistry Course Wes Olson's "Chemistry 101" 4 DVD set the101series.com/chem/contents.html "A look at Chemistry from a Christian point of view"