Chemistry 3.1.1 Atomic Structure — Revision Notes

Clear revision notes for all 3 subtopics: the core notes with every diagram, and a “How confident am I?” self-check against the specification. Want practice questions with answers? See Revision Notes + Practice.

AQA A-Level Chemistry · Revision notes · Free · PDF

1. 3.1.1.1 Fundamental Particles
2. 3.1.1.2 Mass Number and Isotopes
3. 3.1.1.3 Electron Configuration