Periodic Tables

Here is our collection of periodic tables on the Net. If you know of a good site that should be in our collection, please, let us know so we can add it!

PeriodicTable.com – Photographic Periodic Table of the Elements

The definitive online periodic table reference site including technical data, and photographs and descriptions of thousands of samples of the chemical elements.
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Ptable.com – Interactive Web 2.0 Periodic Table

Ptable is an interactive Web 2.0 periodic table with dynamic layouts showing names, electrons, oxidation, trend visualization, orbitals, isotopes, search. Full descriptions.
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ChemicalElements.com – Interactive Periodic Table of the Elements

Chemical Elements is an up-to-date periodic table with detailed but easy to understand information on each of the elements, presented in interactive HTML.
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Periodic Table on Wikipedia

Wikipedia has an extensive page on the periodic table with detailed sections on the history, structure, alternative versions of the periodic table, classifications including groups, periods, blocks, periodicity of chemical properties and trends.
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