Across
- 5. Measure of a nucleus's attraction
- 9. What type of elements are radioactive?
- 10. Name of horizontal rows on periodic table
- 12. What elements are good conductors?
- 13. What is the periodic table based upon?
- 14. Group 2 elements
- 15. Who created the modern periodic table?
Down
- 1. What elemets are bad conductors?
- 2. Energy needed to pull an electron away from a neutral gaseous atom
- 3. Group 17 elements
- 4. Group 1 elements
- 6. What are vertical columns called?
- 7. Another name for groups on the periodic table
- 8. What ions are colored?
- 11. Group 18 elements