Across
- 2. 17th element of the periodic table
- 5. name of group 18 on the periodic table
- 8. atomic number of 82
- 9. element needed to live
- 11. name of the inventor of the periodic table
- 12. atomic number of 6
- 15. 16th element of the periodic table
- 16. 5th element of the periodic table
- 17. 15th element of the periodic table
- 20. the name of the right side of the periodic table
Down
- 1. 7th element of the periodic table
- 3. number of periods on periodic table
- 4. label on the periodic table is Ne
- 6. 47th element on the periodic table
- 7. 13th element of the periodic table
- 10. atomic number of 30
- 13. 4th element of the periodic table
- 14. 18th element on the periodic table
- 18. label on the periodic table is Si
- 19. atomic number of 1