Elements

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Across
  1. 5. Period 4 Group 1
  2. 7. Has 18 Protons
  3. 8. Period 4 Group 8
  4. 10. Has 3 Protons
  5. 13. Period 3 Group 15
  6. 17. Group 2 Period 2
  7. 19. Atomic Mass 14 AMU
  8. 20. Atomic Mass 64 AMU
  9. 21. Period 2 Group 17
Down
  1. 1. Has 6 Electrons
  2. 2. Group 11 Period 6
  3. 3. Has 20 Protons
  4. 4. Group 16 Period 3
  5. 6. Atomic Mass 24 AMU
  6. 9. Has 13 Protons
  7. 11. Group 17 Period 5
  8. 12. Atomic Mass 84 AMU
  9. 14. Period 1 Group 18
  10. 15. Has 33 Electrons
  11. 16. Group 18 Period 2
  12. 18. Has 5 Electrons
  13. 22. Period 2 Group 16