Periodic Table 3

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Across
  1. 1. element with a symbol of Ag
  2. 5. element that is in group 16, period 2
  3. 7. only nonmetal in group 1
  4. 9. element with 84 protons
  5. 10. element with a symbol of Ce
  6. 11. element with five electrons
  7. 13. element with a symbol of K
  8. 17. number which tells you the number of protons
  9. 18. element with a symbol of Na
  10. 19. a row on the periodic table
  11. 21. element with a symbol of Cr
  12. 25. subatomic particle with a negative charge
Down
  1. 2. element with symbol of Ra
  2. 3. element with a symbol of Fe
  3. 4. element that is in group 18, period 1
  4. 6. subatomic particle found in nucleus along with proton
  5. 8. subatomic particle found in nucleus along with neutron
  6. 9. element with 78 protons
  7. 12. subatomic particle with no charge
  8. 13. subatomic particle with a positive charge
  9. 14. element has 62 protons
  10. 15. number which tells you the number of protons plus neutrons
  11. 16. element with a symbol of Au
  12. 20. element with 32 electrons
  13. 22. element with a symbol of Hg
  14. 23. element that is group 2, period 2
  15. 24. a column on the periodic table