Across
- 2. the most powerful type of decay
- 7. spontaneous change to form a more stable isotope
- 10. collective name for protons and neutrons
- 11. number of nucleons in a full shell
- 13. process where lighter nuclei combine to form a heaver one
- 15. waves and particles released from the nucleus
Down
- 1. processes where an atom of one kind of element changes to another element
- 3. discovered x-rays
- 4. weakest type of radiation
- 5. second most powerful decay
- 6. spontaneous emission of penetrating rays
- 8. Extra neutrons split into smaller groups
- 9. radioactive isotope of an element
- 12. five women that suffered from radiation and sued the US radium company for damages.
- 14. SI unit for radiation