periodic table

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Across
  1. 3. numbers going down the left side of the periodic table, and tells you how many shells there are
  2. 4. atomic number 97
  3. 6. has 81 electrons
  4. 8. atomic number 8
  5. 11. has a positive charge
  6. 13. atomic number 102
  7. 15. another word for shells
  8. 16. atomic number 80
  9. 17. has a neutral charge
  10. 19. where protons and neutrons are located
  11. 23. eight least reactive
  12. 24. atomic number 3
  13. 25. atomic number 30
Down
  1. 1. seven the most reactive group
  2. 2. groups numbers that go along the top of the periodic table, and tells you how reactive an element is
  3. 5. has a negative charge
  4. 7. has 18 protons
  5. 9. has 2 protons
  6. 10. atomic number 85
  7. 12. electrons electrons that are on the last outer shell, and tells us what element they can combine with
  8. 14. 83 electrons
  9. 18. atomic number 69
  10. 20. one of the least reactive elements
  11. 21. where electrons are located
  12. 22. one of the most reactive elements