Periodic Table Crossword

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Across
  1. 3. Group 16 Period 6
  2. 5. Og
  3. 6. I have 20 neutrons in group 1
  4. 9. Group 2 Period 6
  5. 10. I have 4 neutrons in group 1
  6. 13. At
  7. 15. I have 22 protons
  8. 17. Used in pools to kill bacteria
  9. 18. Ga
  10. 19. Atomic number 27, a byproduct of copper and nickel
  11. 21. Group 14 Period 6
  12. 22. Hg
Down
  1. 1. I have 76 electrons
  2. 2. Pu
  3. 4. Fr
  4. 5. Group 8 Period 6
  5. 7. Bh
  6. 8. Atomic number 50, low melting point, is used to package food.
  7. 9. I have 45 neutrons in group 17
  8. 11. W
  9. 12. I have 20 neutrons in group 2
  10. 14. Atomic number 10, colorless, odorless, gas. Second lightest noble gas.
  11. 16. My atomic number is 68
  12. 20. My atomic number is 68