3D periodic table: explore elements, atoms and reactions
Fly around a 3D periodic table, open any element to see its atom with protons, neutrons and electrons, select several elements to compare them, put them on the reaction bench and watch what happens when they meet. Free for every student, no sign-up.
How the periodic table is arranged
The elements are arranged by atomic number (the number of protons). Each row is a period and each column is a group. Elements of a group have the same number of outer electrons, so they have similar properties: group 1 is the alkali metals, group 17 the halogens and group 18 the noble gases. Going down a group the atoms get bigger; going across a period from left to right the elements change from metals to non-metals.
Want to see how atoms and bonds really look? Try the free 3D labs: build an atom, orbitals, ionic bond, covalent bond and molecule shapes.
Frequently asked questions
Is the periodic table game free?
Yes. It is free for everyone, with no sign-up and no card. Your best scores are saved only in your own browser.
How can I learn the periodic table quickly?
Start with the Explore tab to see the families and the groups and periods, then play Place the elements with the first 20 elements and move to the next level. The quick quiz and the Build the atom challenge help you remember symbols, atomic numbers and electron arrangements.
What do the group and the period of an element tell me?
The period (row) is the number of electron shells. For the s and p block the group tells you the number of outer electrons: group 1 has 1, group 2 has 2 and groups 13 to 18 have 3 to 8 (10 less than the group number). Elements in the same group behave alike.
Which class is it for?
It follows the NCERT Class 11 chapters Structure of Atom and Classification of Elements and Periodicity, and it is useful from Class 9 to NEET and JEE revision.