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The DeskTopper
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version of the Alexander Arrangement of Elements
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This improved periodic table eliminates the confusion and inconsistencies of the flat table by arranging the elements in order, with successive elements touching, while keeping the accepted groups and families. The 3-D form has three parts looping outwards from a middle area.
The central column is almost the same as the very first periodic tables, which changed to a flat form for convenience.
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The elements in Groups 0, Ia, IIa, IIIb, IVb, Vb, and VIIIb are in the central column (at left, foreground), topped by a `crown' of Hydrogen. From the lower part of this branches a longer loop showing groups IIIa, IVa, Va, VIa, VIIa, VIII, Ib, and IIb (left segment in this photo and the one below it).
From the lower half of this, the longest loop is the f-block, displaying the Rare earths (right segment).
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The Periodic Law is followed only in a 3-D form as the element sequence without gaps is only possible using a downward helix - including the Hydrogen 'crown', which is unique in the AAE by illustrating the superior position given to Hydrogen while suggesting its multiple relationships and recently upgraded importance.
Also permitted by 3-D is the he unprecedented logic of integration of the Rare earth and Transition elements (below left photo, left segment), which is detached on standard charts.
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The motivation gained by the unique&attractive shape and strict adherence to the Periodic Law is a great aid in atttracting the new student to the extraordinary importance of the periodic table.
A teaching version of the Alexander Arrangement -- involving students in entering the data -- and a large classroom display AAE are available as well as the DeskTopper shown here, which has element information printed.
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Detailed DeskTopper
®
specifications are available.
I like it! Maybe I'd like to place an order, especially at the new low price.
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The Alexander Arrangement of Elements DeskTopper
®
Description
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