Across
- 4. Heavy, positively charged particles
- 10. Emission of radiation from unstable nuclei
- 11. Ability of a nucleus to remain unchanged
- 12. Ability to remove electrons from atoms
Down
- 1. Fast-moving electrons
- 2. Total number of protons and neutrons
- 3. High-energy electromagnetic waves
- 5. Splitting of heavy nuclei
- 6. Joining of light nuclei
- 7. Time for half of radioactive nuclei to decay
- 8. Atom with specific numbers of protons and neutrons
- 9. Device for detecting radiation