What defines two nuclei as isotopes?
They have the same neutron number but different proton numbers.
They have the same nucleon number but different proton numbers.
They have the same proton number but different neutron numbers.
They have different proton numbers but the same neutron numbers.
Flashcards for Edexcel AS Level Physics Background radiation and nuclear emissions, covering the key terms and definitions you need to recall. 27 cards, matched to the Edexcel AS Level Physics (8PH0) specification.
