Reading the Periodic Table

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12345678910111213141516171819
Across
  1. 1. Group 9: Period 4
  2. 3. Group 18: Period 3
  3. 5. Group 18: Period 2
  4. 8. Group 17: Period 2
  5. 9. Group 1: Period 4
  6. 11. Group 1: Period 1
  7. 13. Group 2: Period 4
  8. 14. Group 11: Period 5
  9. 15. Group 14: Period 5
  10. 17. Group 1: Period 2
  11. 19. Group 16: Period 2
Down
  1. 1. Group 14: Period 2
  2. 2. Group 17: Period 4
  3. 4. Group 11: Period 4
  4. 6. Group 1: Period 3
  5. 7. Group 18: Period 1
  6. 10. Group 16: Period 4
  7. 12. Group 15: Period 3
  8. 16. Group 12: Period 4
  9. 18. Group 17: Period 5