Prongo's Extended Interactive Periodic Table is a complete educational reference covering all 118 recognized chemical elements. Search by name, symbol, atomic number, category, or common use; combine filters; and switch between an accurate 18-group table and a mobile-friendly element list.
Explore every element
Select any element to study its atomic structure, electron configuration, state, density, temperatures, electronegativity, radius, ionization energy, common uses, safety context, discovery period, and educational facts. Unknown or predicted values are labeled instead of filled with false precision.
Compare, visualize trends, and practice
- Compare up to three elements side by side.
- Map atomic radius, electronegativity, ionization energy, mass, temperature, and density trends.
- Use a simplified Bohr model to understand electron shells.
- Practice symbols, atomic numbers, and table positions in quiz mode.
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