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Structure, Bonding & Material Type Synthlet
Electronegativity plus valency can be used to predict a binary material's structure, bonding & material type with good – but not perfect – accuracy using a semi-quantitative van Arkel-Ketelaar Triangle + Laing Tetrahedron, as discussed on the previous pages of this Chemogenesis web book.

Sodium:  Eneg = 0.93   Valency = 1

Chlorine:  Eneg = 3.16   Valency = 1
Electronegativity Difference = 2.23   Average Electronegativity = 2.045
% Ionic = 71.2    % Covalent = 28.8    Stoichiometric Formula = NaCl

Calculated name: Sodium chloride

From The Chemical Thesaurus Database
Structure
More Information
Sodium chloride

The author holding a physical model of the truncated tetrahedron of structure, bonding & material type. Download, print, cut out & build your own:

Read more about the Binary Material synthlet on the previous two pages of this web book: the van Arkel-Ketelaar Triangle of Bonding and the Tetrahedron of Structure, Bonding & Material Type.

Yes, the synthlet does make some mistakes. For example, the well known gas carbon dioxide, CO2, is predicted to be a network covalent material like sand: silicon dioxide, SiO2. But it is correct more than 90% of the time.

Laing Tetrahedron
Classification of Matter

© Mark R. Leach 1999-2009

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