Periodic Table Puzzle- Kelsey

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Across
  1. 3. Cf
  2. 5. Kr
  3. 8. Li
  4. 10. Atomic Number is 79
  5. 13. Atomic Number is 47
  6. 15. A dense to reators.
  7. 16. a silvery white rare earth metal.
  8. 19. A soft silvery white metal which melts.
  9. 20. sr
  10. 21. Br
  11. 24. Atomic Number is 2
Down
  1. 1. 140.04 Neutron
  2. 2. 17
  3. 4. 20.10 Neutron
  4. 6. Atomic Number is 17
  5. 7. Be
  6. 9. 6
  7. 11. 9
  8. 12. 14
  9. 14. A soft silvey extremely reactive metal alkali metal gron
  10. 17. 125 Neutron
  11. 18. Ho
  12. 22. 8 Neutron
  13. 23. Os