Interactive periodic table of the elements

Explore all 118 chemical elements in this interactive periodic table. Each tile shows the element’s symbol and atomic number, colour-coded by category — alkali metals, transition metals, halogens, noble gases, and more. Click any element to see its full name, atomic number, atomic mass, group, and period.

How the periodic table is organised

Elements are arranged by increasing atomic number into rows called periods and columns called groups. Elements in the same group share similar chemical properties because they have the same number of outer electrons. The two separate rows at the bottom are the lanthanides and actinides (the f-block), which are pulled out to keep the table compact.

Using it with our other tools

The atomic masses shown here are exactly what you need for the molecular weight calculator. To compare how strongly elements attract electrons and predict bonding, try the electronegativity calculator, and for solution work see the chemistry calculator.

Frequently asked questions

How many elements are there?

There are 118 confirmed elements, from hydrogen (1) to oganesson (118). The first 94 occur naturally, while the rest have only been made artificially.

What do the groups mean?

Groups are the vertical columns (1–18). Elements in a group have similar properties — for example, Group 1 are reactive alkali metals and Group 18 are unreactive noble gases.