Periodic Table Choice Board

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Across
  1. 4. has the abbreviation Na
  2. 7. has the abbreviation Kr
  3. 8. has the abbreviation Nh
  4. 9. has the abbreviation Sc
  5. 10. has the abbreviation Cl
  6. 12. has the abbreviation Ar
  7. 13. has the abbreviation He
  8. 16. has the abbreviation Br
  9. 18. has the abbreviation Ge
  10. 19. has the abbreviation F
Down
  1. 1. has the abbreviation Sr
  2. 2. has the abbreviation Xe
  3. 3. has the abbreviation C
  4. 5. has the abbreviation Fe
  5. 6. has the abbreviation Mg
  6. 9. has the abbreviation Se
  7. 11. has the abbreviation H
  8. 14. Has the abbreviation Li
  9. 15. has the abbreviation U
  10. 17. has the abbreviation O