Across
- 2. 8 electrons on a shell
- 4. only the valence electrons of an atom are involved in chemical bonding
- 5. involves 2 pairs of electrons
- 8. the ability to attract electrons
- 10. positive ions
- 11. who put together the periodic table
- 12. highly reactive gases
- 14. has 8 valence electrons
- 15. negative ions
- 16. valence shell electron pair repulsion
Down
- 1. metal + nonmetal
- 3. involves 3 pairs of electrons
- 6. has only 2 valence electrons
- 7. a covalent bond involving one pair of electrons
- 9. a pair of electrons shared by 2 atoms
- 10. nonmetal + nonmetal
- 13. the steps to divide the nonmetals and metals on the periodic table