What defines an isotope of an element?
Same number of neutrons but different number of electrons.
Same number of protons but different number of electrons.
Same number of neutrons but different number of protons.
Same number of protons but different number of neutrons.
Flashcards for AQA GCSE Physics 4.3.2 Different half-lives of radioactive isotopes, covering the key terms, definitions and equations you need to recall for Paper 1 and Paper 2. 21 cards, matched to the AQA GCSE Physics (8463) specification. Recall questions account for roughly 40% of marks at GCSE Physics, so these target the marks you can secure before the paper starts.