Across
- 3. elements that are good conductors
- 4. English chemist
- 6. atom(s) with a positive or negative charge
- 8. ability of atoms to attract electrons
- 10. extremely unreactive
- 11. German chemist
- 12. periods
- 13. columns
Down
- 1. rule for 8 electrons
- 2. atomic radii does this from left to right
- 3. Russian chemist
- 5. group 17
- 7. properties of metals and nonmetals
- 9. elements in groups 3 to 12