Across
- 2. the smallest number next to an element
- 5. Copper and Iron are these
- 8. nonmetal and nonmetal bond
- 11. same number as element's group no
- 12. these elements are fully stable
- 14. Carbon 12 Is this
- 16. metals make these
Down
- 1. the number of protons + neutrons
- 3. same numbers as element's period no
- 4. nonmetals make these
- 6. react with Na
- 7. the elements on the left
- 9. the rows of the periodic table
- 10. the elements to the right
- 13. nonmetals and metals bonding
- 15. the columns of the periodic table