General Chemistry · Module 4 · Periodic trends

Periodic Trends Walkthrough

Watch atoms shrink and grow as you walk across the periodic table, see why some electrons are easy to pull off and others are not, and find out why fluorine wins every tug-of-war for electrons. Go at your own pace. Nothing here is graded.

Speed

Think of it like this

Quick check

Wrong answers are fine here. Read why, then try again.

Dr. Akash Garg · General Chemistry Study Tools · Particle drawings are simplified and not to scale. CC BY-NC-SA 4.0
Use the left and right arrow keys to move between steps. Practice next in the Periodic Trends Lab. Atoms are drawn as shells of dots (a simplified Bohr-style picture), motion is sped up so you can watch it, and radii, ionization energies, electron affinities and electronegativities are typical textbook table values that vary a little between sources.