IB Physics Sub-topic E3 Notes
This page contains our IB Physics notes for sub-topic E3. By reading each one of these notes, you will fully cover the content for IB Physics 'Radioactive decay'.
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Isotopes
In Topic D.1, you learned about atomic notation. In this, it is important to understand that mass number and charge regularly change in chemical reactions, giving rise to isotopes and ions, respectively. These are collectively termed nuclides.
- Ions are nuclides that have lost or gained electrons, affecting their charge number
- Isotopes are nuclides with different numbers of neutrons, affecting their mass number. Understandably, this affects their stability.
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