Across
- 3. eighteenth element on the periodic table
- 5. twelfth element on the periodic table
- 8. seventh element on the periodic table
- 9. second element on the periodic table
- 10. sixth element on the periodic table
- 11. sixteenth element on the periodic table
- 13. eleventh element on the periodic table
- 16. third element on the periodic table
- 17. eighth element on the periodic table
- 18. fourteenth element on the periodic table
- 19. twentieth element on the periodic table
Down
- 1. fifth element on the periodic table
- 2. fourth element on the periodic table
- 4. fifteenth element on the periodic table
- 6. tenth element on the periodic table
- 7. nineteenth element on the periodic table
- 9. first element on the periodic table
- 12. ninth element on the periodic table
- 14. thirteenth element on the periodic table
- 15. seventeenth element on the periodic table