Elements of the Periodic Table

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Across
  1. 4. This elements abbreviation is As
  2. 6. The number of protons for this element is 16
  3. 9. The symbol Y represents this element
  4. 12. Co is the symbol for this element
  5. 14. This element has 18 protons
  6. 16. This elements symbol is Fr
  7. 18. The number of protons for this element is 15
  8. 20. This element has the symbol Sn
  9. 21. This element is abbreviated Rn
  10. 22. This element has a mass of 126.9
  11. 23. This elements mass is 26.98
  12. 25. This element has 8 protons
  13. 28. This element has an atomic number of 1
  14. 29. This elements symbol is Be
Down
  1. 1. This element has 20 protons
  2. 2. The symbol for this element is Hg
  3. 3. Ni is the symbol for this element
  4. 5. This element has 9 protons
  5. 7. This elements symbol is Li
  6. 8. This element is number 5
  7. 10. This element has 56 protons
  8. 11. This elements symbol is K
  9. 13. This elements symbol is W
  10. 15. This element has a mass of 107.86
  11. 17. Na stands for this element
  12. 19. This elements symbol is Pb
  13. 22. This element has a mass of 55.8
  14. 24. This elements symbol is Xe
  15. 26. This element has a mass of 196.96
  16. 27. This elements proton number is 12