Periodic Table
All 118 chemical elements in an interactive table, colour-coded by category. Click an element for its details, or search by name, symbol, or number. Runs locally in your browser.
Standard periodic table (IUPAC 1–118). Tile colour shows category: alkali metals, alkaline earths, transition metals, post-transition metals, metalloids, nonmetals, halogens, noble gases, lanthanides, and actinides. Atomic mass is the standard atomic weight; for elements with no stable isotope (technetium and everything from polonium onward except a few), the mass number of the longest-lived isotope is shown in brackets. Periods are the seven rows of the main table; the lanthanides (57–71) and actinides (89–103) are pulled out into the two rows below. Click a tile for details, or type to highlight. Runs locally — nothing leaves your browser.