Periodic Tables

Mokeur's Periodic Table an interactive on-line Periodic Table.
With a Downloadable up to date table.

Flash Elements another interactive on-line Periodic Table.
With a Downloadable flash program that can bring it to your desktop.

An Excel Spreadsheet with Atomic Radius and First Ionization Energy.
Another Excel Spreadsheet with many periodic properties listed.
(I do not remember where I got this one.)

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