About periodictable.study
periodictable.study is a free, interactive periodic table built for one job: giving chemistry students a fast, accurate reference they can pull up in seconds — during homework, lab, or exam review — without wading through clutter or paywalls.
What you can do
- Click any of the 118 elements for its atomic number, mass, category, state, and electron configuration, with a Full details view for electronegativity, melting and boiling points, and density.
- Filter by category, common groups (noble gases, halogens, alkali and alkaline earth metals), metal/nonmetal/metalloid, or state at room temperature.
- Search by name, symbol, or atomic number.
- Download every element and its statistics as a CSV for offline study.
Where the data comes from
We aim for textbook-accurate values suitable for coursework:
- Atomic weights follow the IUPAC standard atomic weights. Values shown in parentheses are the mass number of the most stable known isotope, used for elements without a standard atomic weight.
- Electron configurations are standard ground-state configurations in noble-gas shorthand, including the well-known anomalies (such as chromium, copper, and the heavier transition metals). Configurations for the heaviest synthetic elements are predicted.
- Melting points, boiling points, and densities are standard reference values; some values for the heaviest synthetic elements are estimated or unknown and are shown as a dash.
Found something that looks off? We take accuracy seriously — please let us know.
How the site stays free
A single, unobtrusive ad at the bottom of the page covers hosting costs. The table and every feature work fully without it, and ads are never placed in the way of the content.
Contact
Corrections, suggestions, or questions: contact@periodictable.study.