Across
- 3. has 1 electron
- 6. found in all atoms
- 7. has 6 electrons
- 9. three sets of shared electrons
- 11. the electrons in the outermost shell
- 16. a group of atoms bonded together
- 17. represents valence electrons
- 19. way that each atom has eight electrons
- 20. attraction between two atoms
Down
- 1. two sets of shared electrons
- 2. has 7 electrons
- 4. a part or aspect of something abstract
- 5. has 7 electrons
- 8. has 4 electrons
- 10. has 2 electrons
- 12. the smallest unit of ordinary matter
- 13. make up group 18 of the periodic table
- 14. linkage of electrons between atoms
- 15. the lightest element
- 18. has 6 electrons