Periodic Table

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1234567891011121314151617181920212223
Across
  1. 2. period 2, group 3
  2. 7. period 3, group 6
  3. 8. period 2, group 4
  4. 10. period 2, group 1
  5. 12. period 4, group 1
  6. 13. period 2, group 6
  7. 14. period 4, group 0
  8. 16. period 5, group 4
  9. 17. period 1, group 1
  10. 20. period 2, group 7
  11. 22. period 4, group 7
  12. 23. period 3, group 1
Down
  1. 1. period 5, group 0
  2. 3. period 7, group 2
  3. 4. period 7, group 1
  4. 5. period 1, group 0
  5. 6. period 3, group 2
  6. 7. period 3, group 4
  7. 9. period 3, group 7
  8. 11. period 6, group 4
  9. 15. period 2, group 5
  10. 18. period 2, group 0
  11. 19. period 4, group 2
  12. 21. period 5, group 7