Across
- 3. radiation that has 0 charge and mass
- 6. discovered radioactivity
- 9. energy to separate protons and neutrons
- 11. daughter nuclide formed when Uranium-238 undergoes alpha decay
- 14. region on a graph where stable isotopes lie
- 15. ability of radiation to pass through a medium
- 16. time taken for half the amount of radioactive sample to decay
- 17. deflected to the cathode in an electric field
Down
- 1. negative electrode
- 2. number of modes of decay
- 4. positive electrode
- 5. has the same mass as that of an electron
- 7. counter to detect radiation
- 8. plot of activity against time
- 10. collective name for protons and neutrons
- 12. type of radioactivity whereby a nucleus is induced to disintegrate
- 13. ratio of protons to electrons