Elements of The Periodic Table

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Across
  1. 3. atomic number is 14.
  2. 4. in group 15,mass number of 4
  3. 5. colorless,odorless,non toxic and a mass number of 4.
  4. 7. lightest weight out of all elements.
  5. 9. atomic number is 6.
  6. 11. atomic symbol is Ar
  7. 14. helps keep teeth healthy
  8. 17. atomic number is 16.
  9. 18. atomic number is 15,atomic symbol is “P”.
  10. 19. contains 2 shells,atomic number of 3.
  11. 20. atomic number is 12.
Down
  1. 1. in the 13th group,atomic number is 5.
  2. 2. used to remove germs and bacteria from pools
  3. 6. colorless but is used for advertising signs .
  4. 8. what we breathe.
  5. 10. atomic number is 4
  6. 12. atomic symbol is “K”.
  7. 13. atomic symbol is “F”.
  8. 15. 13th element on the periodic table.
  9. 16. in group 1,atomic symbol is “Na”.