Zayra- element puzzle

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Across
  1. 3. Symbol is CI
  2. 7. I have 26 neutrons
  3. 8. is in the actinoids category and its symbol is Th
  4. 9. (2,4)
  5. 15. I have 80 protons
  6. 16. post-transition metals and symbol is PO
  7. 18. (9,4)
  8. 19. 79th element in the periodic table
  9. 21. I have 28 neutrons
  10. 23. Sixth element in the periodic table
  11. 24. I have 20 neutrons
  12. 25. I have 82 neutrons
Down
  1. 1. Symbol is AR
  2. 2. is in the actinoids category and its symbol is AC
  3. 4. symbol is NE
  4. 5. I have 72 protons
  5. 6. I have 30 protons
  6. 10. (2,5)
  7. 11. Symbol is KR
  8. 12. The first element in the periodic table
  9. 13. noble gas and symbol is RN
  10. 14. I have 8 neutrons
  11. 17. I have 88 protons
  12. 20. (3,5)
  13. 22. 87th element in the periodic table