Periodic Table

All 118 IUPAC-confirmed elements, color-coded by category. Hover any tile for a quick read; click for the full profile, electron configuration, and common uses. New to the layout? Read periodic table blocks explained.

It's built as a reference you actually browse rather than a quiz: filter by category, phase at room temperature, or discovery century to see how the table's structure tracks real chemistry — metals cluster on the left, noble gases line up on the right, and the elements humans found first (carbon, iron, gold) sit apart from the ones only synthesized in a lab within the last century.