Across
- 3. group 17 very reactive
- 6. part metal & part non-metal
- 8. vertical column
- 10. negatively charged ion
- 11. poor conductor of heat & electricity
- 13. elements that are found in group 3-12
- 15. Russian table maker
- 17. Group 2 to reactive to exist in nature
Down
- 1. group 18 Nonreactive
- 2. positively charged ion
- 4. Group 1 extreme reactivity
- 5. energy required to remove an electron from an atom
- 7. Between group 3-4 similar reactivity to group 2
- 9. horizontal row
- 12. group of bonded atoms
- 14. Between group 3-4 Radioactive
- 16. good conductor of heat & electricity