Periodic table

12345678910111213141516171819202122
Across
  1. 2. This element has 14 electrons
  2. 4. this element is used in balloons to make them float
  3. 6. this element has 6 neutrons
  4. 7. where the noble gases are Located
  5. 8. symbol is Mg
  6. 13. this element is used in pools
  7. 16. this element has 31 neutrons
  8. 17. Symbol is Ag
  9. 18. Symbol is Na
  10. 19. symbol is N
  11. 20. element with the periodic number 3
  12. 22. Symbol is Au
Down
  1. 1. element with the periodic number 21
  2. 3. where the alkali metals are located
  3. 4. element with the periodic number 1
  4. 5. symbol is k
  5. 9. symbol is Al
  6. 10. symbol is Cu
  7. 11. most of the elements on the periodic table are this
  8. 12. This element has 8 neutrons
  9. 13. symbol is Co
  10. 14. element used in OPEN signs
  11. 15. symbol is As
  12. 21. symbol is Fe