Periodic table of elements

12345678910111213141516171819
Across
  1. 2. compound for table salt
  2. 4. atomic number for scandium
  3. 8. atomic number for boron
  4. 10. the lightest element
  5. 12. atomic number seventy-four
  6. 13. chemical symbol Ar
  7. 15. chemical symbol Au
  8. 16. chemical symbol Po
  9. 17. atomic symbol Sr
  10. 18. atomic number 30
  11. 19. atomic number forty-seven
Down
  1. 1. atomic number fourteen
  2. 3. atomic number for Chlorine
  3. 5. compound H2O
  4. 6. atomic number sixty five
  5. 7. chemical symbol Fe
  6. 9. atomic number for mercury
  7. 10. gas used in balloons
  8. 11. atomic number fifty-four
  9. 14. chemical symbol Ne
  10. 17. chemical symbol Na