Across
- 2. What type of radiation has positive electric charge?
- 3. What type of radiation has no electric charge?
- 5. the time required for half of an original quantity of an element to decay
- 7. An alpha particle consists of a nucleus of this element.
- 9. What type of radiation has negative electric charge?
- 10. What results from radioactive decay and involves unstable nuclei?
Down
- 1. The combination of nuclei of light atoms to form heavier nuclei with the release of energy
- 4. A self sustaining reaction
- 6. The presence of what helps hold the nucleus together?
- 8. The half-life of this element is about 5,730 years.