Periodic Table

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12345678910111213141516171819
Across
  1. 2. Group 18, Period 3
  2. 4. Si
  3. 5. H
  4. 7. Atomic number 12
  5. 9. Group 13, Period 3
  6. 11. Group 2 Period 4
  7. 13. Ne
  8. 16. O
  9. 17. Li
  10. 19. Au
Down
  1. 1. Group 13, Period 2
  2. 3. Atomic number 7
  3. 6. Group 12, Period 4
  4. 7. Atomic number 25
  5. 8. Hg
  6. 9. As
  7. 10. Atomic number 16
  8. 12. Group 14, Period 2
  9. 14. Co
  10. 15. He
  11. 18. Group 8, Period 4