Interactive Periodic Table
Explore all 118 elements: search by name, symbol or number, colour the table by category, electronegativity, melting point, density or discovery year, and slide the temperature to see which elements are solid, liquid or gas.
Interactive Periodic Table
Runs in your browser — nothing you enter is uploaded or stored.
Scratchpad auto-saved
How it works — in four simple steps
No signup and nothing to install — it all runs in your browser.
Search or click
Type a name, symbol or number, or click any tile.
Pick a colour mode
Colour the table by category or by a property to compare elements at a glance.
Use the sliders
In State mode set a temperature; in Discovery mode replay history by year.
Open the element page
Follow the link in the panel for isotopes, configuration diagrams and uses.
Set Colour by to State and drag the temperature: at 30 °C gallium and caesium turn liquid.
Features
12 colour modes
Category, block, state at any temperature, electronegativity, atomic weight, melting and boiling point, density, ionisation energy, atomic radius, discovery year and radioactivity.
CIAAW 2024 atomic weights
Standard atomic weights as published by IUPAC's Commission, including the 2024 revisions for gadolinium, lutetium and zirconium.
Instant search
Type a name, symbol or atomic number; matching elements stay lit and the first match opens.
Temperature slider
From absolute zero to 6,000 °C — watch elements melt and boil.
A page for every element
Each tile links to a full page with isotopes, configuration diagrams, discovery and uses.
Keyboard friendly
Tab into the table and move with the arrow keys; Enter on search opens the match.
About the Interactive Periodic Table
The table follows the layout recommended by IUPAC: 18 groups, seven periods, and the lanthanides (La–Lu) and actinides (Ac–Lr) shown as two 15-element rows below. Each tile shows the atomic number, symbol, name and standard atomic weight from the Commission on Isotopic Abundances and Atomic Weights (CIAAW, 2024); elements with no stable isotopes show the mass number of their most stable isotope in brackets.
Colour modes turn the table into a chart. Electronegativity shows the familiar rise towards fluorine in the top right; melting point picks out carbon and tungsten; density peaks at osmium and iridium; and the discovery-year slider replays history from the elements known in antiquity to oganesson in 2002. The temperature slider compares each element's melting and boiling points (at normal atmospheric pressure) with the temperature you choose — at 25 °C only mercury and bromine are liquid, at 30 °C gallium and caesium join them.
Click or tab to any element to see its configuration, shells, melting and boiling points, density, electronegativity and discovery, and follow the link to its full page with isotopes, uses and comparisons. Arrow keys move around the table.