Periodic Table Croaaword Puzzle

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Across
  1. 2. transition metal in perion 4
  2. 3. 3A period 2
  3. 5. Nobel gas period 3
  4. 9. period 4 the 8th transition metal
  5. 11. 4A in period 5
  6. 12. transition metal in period 5
  7. 16. in 5A in period 5
  8. 18. 6a in period 3
  9. 19. the 1st transition metal
  10. 20. 5A period 4
  11. 24. period 5 that is a Halogen
  12. 25. The first Alkali Metal
  13. 28. 4A in the third period
  14. 29. Alkaline Earth metal in period 6
Down
  1. 1. Nobel gas in period 5
  2. 4. Without ________ we wouldn't be able to breathe
  3. 6. The third Alkaline Earth Metal
  4. 7. Nobel gas in period 2
  5. 8. 4A period 6
  6. 10. HAlogen in period 2
  7. 12. 6 period that is a liquid
  8. 13. Liquid 7A
  9. 14. 5A period 2
  10. 15. Alkaline Earth Metal in period 2
  11. 17. third transition metal in period 4
  12. 21. the last transition metal in period 5
  13. 22. 3A in period 4
  14. 23. 3A period 5
  15. 26. Nobel gas 8A period 1
  16. 27. Alkali metal period 3