Across
- 3. Atomic size ________ across a period?
- 5. Atomic size ________ down a group?
- 9. What most likely conducts electricity?
- 12. What are the outermost shell called?
- 13. The number of protons in an atom?
- 14. What are the rows called on the periodic table?
- 15. Group that has a stable outer shell?
Down
- 1. Neutral electric charges?
- 2. Chart showing all the elements?
- 4. Metals, Nonmetal, and _________?
- 6. Negatively charged particles?
- 7. Center of the atom?
- 8. The scientists who made the first periodic? table
- 10. What are the columns called on the periodic table?
- 11. Most reactive metal?