Across
- 3. energy levels or rings
- 6. Tells how stable an element is.
- 7. the structure in the atom
- 8. holds 2 electrons
- 11. has a positive charge in the nucleus
- 14. holds 8 electrons
- 15. Other word for stability
- 17. Other word for rows.
- 18. Most stable side on the periodic table.
- 19. How stable an element is.
Down
- 1. made up of protons and neutrons
- 2. on the periodic table
- 4. smallest part of an element
- 5. made up of electrons
- 9. has zero charge in the nucleus
- 10. has a negative charge outside the nucleus
- 12. Other word for columns.
- 13. holds 18 electrons
- 16. Least stable side on the periodic table.