- Visual Elements Periodic Table (Royal Society of Chemistry)
"The Royal Society of Chemistry's interactive periodic table features history, alchemy, podcasts, videos, and data trends across the periodic table." (website description)
- PTable Dynamic Periodic Table
Dynamic periodic table that shows information about states, proerties, isotopes, orbitals, compounds formed, and more.
- ChemiCool Periodic Table of Elements and Chemistry
Clicking on an element displays physical and chemical properties, and links to YouTube demos
- Periodic Table of Videos
Short YouTube lectures and demonstrations.
- The Periodic Table of Elements
Based on Wolfram Mathematica's ElementData. Links to pictures (including minerals), technical & isotope data. Technical data link provides graphical comparisons with other elements.
- Web Elements of the Periodic Table
Tabbed browsing of elements (history, biology, thermochemistry), compounds (binary and complexes), periodicity(physical properties), chemistry books, etc.
- Periodic Table (American Elements)
A periodic table with links to descriptions, physical properties and recent literature references. Each element's page has a listing of related commercial compounds with links to descriptive pages.