Periodic Table Puzzle - Sheridan Hurliman

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Across
  1. 1. I have 10 neutrons in group 18
  2. 4. I have 79 electrons
  3. 5. Sc
  4. 7. Positively charged particle
  5. 8. I have 6 neutrons in group 14
  6. 9. I have 30 electrons
  7. 11. Sn
  8. 12. I have 28 neutrons in group 5
  9. 16. (11,5)
  10. 17. I have 8 electrons
  11. 19. (7,7)
  12. 22. I have 5 neutrons in group 2
  13. 23. F
Down
  1. 2. particles with no neutral charge
  2. 3. a small particle with a negative charge
  3. 6. (1,4)
  4. 10. symbol the number that is assigned to an element
  5. 13. (5,7)
  6. 14. I have 76 electrons
  7. 15. I have 26 electrons
  8. 18. Cl
  9. 19. Ba
  10. 20. I have 20 neutrons in group 2
  11. 21. (18,3)