Elements 1 to 20 on the Periodic Table

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12345678910111213141516171819
Across
  1. 2. number 13
  2. 5. number 4
  3. 7. number 11
  4. 8. number 8
  5. 13. number 9
  6. 15. number 19
  7. 16. number 18
  8. 17. number 17
  9. 18. number 12
Down
  1. 1. number 14
  2. 3. number 3
  3. 4. number 20
  4. 6. number 1
  5. 7. number 16
  6. 9. number 7
  7. 10. number 2
  8. 11. number 6
  9. 12. number 15
  10. 14. number 5
  11. 19. number 10