Atomic number, mass number and isotopes

This sub-topic explains the fundamental properties of atomic nuclei, covering definitions of atomic number, mass number, nuclide notation, and isotopes. You will also learn to calculate relative atomic mass from isotopic abundance data, a common IB exam question.

📖Study Guide

In-depth bilingual notes with worked past paper examples.

✍️Practice Exam

Timed practice questions with mark scheme grading. Coming soon.

🎴Flashcards

Spaced repetition for key concepts and definitions. Coming soon.

📊Visualizer Coming Soon

Interactive plots and diagrams to build intuition. Coming soon.

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