Element & Atomic Number

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Across
  1. 4. This element's atomic number is 16
  2. 9. This element's atomic number is 17
  3. 10. This element's atomic number is 13
  4. 13. This element's atomic number is 7
  5. 15. This element's atomic number is 15
  6. 17. This element's atomic number is 20
  7. 19. This element's atomic number is 11
Down
  1. 1. This element's atomic number is 9
  2. 2. This element's atomic number is 4
  3. 3. This element's atomic number is 12
  4. 5. This element's atomic number is 14
  5. 6. This element's atomic number is 6
  6. 7. This element's atomic number is 2
  7. 8. This element's atomic number is 1
  8. 10. This element's atomic number is 18
  9. 11. This element's atomic number is 19
  10. 12. This element's atomic number is 5
  11. 14. This element's atomic number is 10
  12. 16. This element's atomic number is 8
  13. 18. This element's atomic number is 3