Flashcards in Unit 3 Nuclear Chemistry Deck (5)
why are isotopes radioactive?
they have an unstable nucleus (i.e. more neutrons than protons)
why is energy emitted from radioactive isotopes?
they emit energy as they spontaneously rearrange to reduce the size of the nucleus (this is nuclear decay)
what are the tree types of radiation
alpha, beta and gamma
what is the mass and charge of each type of radiation?
alpha - helium particle with a mass of 4, charge of 2
beta - electron with mass of 0 and change of -1
gamma - electromagnetic waves - no mass or charge