Free interactive chemistry · SIM-PT-002
Periodic trend explorer
Colour the periodic table by a property and see the trends across periods and down groups.
Open the interactive simulation →How to use this simulation
- Use “Colour by” to choose a property: atomic mass, first ionisation energy (IE₁) or radius.
- Turn on the 3D trend view to see the values as bar heights.
- Shift-click elements to compare them in the table below.
What to notice
- Radius decreases across a period and increases down a group.
- Ionisation energy does the opposite, with small dips (e.g. at O and Al).
Try this
Find the element with the highest first ionisation energy. Why is it so high?
Try it for free →