Interactive periodic table

All 118 elements. Click one for its details and Bohr model, or press / to search. Free, no sign-up.

What is on each element’s page

Click any tile to open the element, then use the arrow keys to walk through the table.

Atomic number, atomic mass, group, period and block
State at 20 °C, electronegativity where it applies, and valence electrons
The main or longest-lived isotope, with its protons, neutrons and electrons
Electron configuration and electrons per shell
A Bohr model, which you can download or place on a board

How to read the table

Elements run in order of atomic number, the count of protons in the nucleus. Each row, or period, begins a new electron shell. Each column, or group, gathers elements with similar outer electrons, and that is why they tend to behave alike: the alkali metals in group 1 all react readily, and the noble gases in group 18 barely react at all.

Colors mark the category of each element, and the block tells you which kind of subshell is being filled. To look something up fast, press / and type a symbol, a name or a number.

Questions,
answered

Is this periodic table free to use?

Yes. It is free, with no account, and works in your browser on a computer or tablet.

Can I find an element by name or number?

Yes. Press / or click the search icon, then type its symbol, name or atomic number. Enter opens the first match.

Can I put an element on my worksheet?

Yes. Open the element and choose Add tile, then download it or put it on a Pappper board with your worksheet.