Interactive Periodic Table of Elements
Click any element to see its atomic mass, electron configuration, electronegativity, density and more — instant, free and in your browser.
About this periodic table
This periodic table covers all 118 known elements. Every element shows its atomic number, symbol, name and relative atomic mass, and opens a property card with the electron configuration, electronegativity (Pauling scale), density, melting and boiling points and the electron shells. It works fully offline-friendly: everything runs in your browser, nothing is uploaded.
Use the family chips to highlight a group — alkali metals, transition metals, metalloids, nonmetals, noble gases, lanthanides and actinides — or type into the search box to find an element by symbol, number or name. Jump straight from any element into the molar mass calculator, the molarity calculator or the dilution calculator.
Atomic masses are mean relative atomic masses in g/mol. For elements without a stable isotope, the mass of the longest-lived isotope is used.