Scientific elements

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Across
  1. 2. this element's atomic symbol is H
  2. 6. this element's atomic symbol is Cu
  3. 9. this element's atomic symbol is Fe
  4. 10. this element's atomic symbol is Li
  5. 11. this element's atomic symbol is Ar
  6. 12. this element's atomic symbol is Al
  7. 13. this element's atomic symbol is Pb
  8. 14. this element's atomic symbol is Na
  9. 15. this element's atomic symbol is S
Down
  1. 1. this element's atomic symbol is Xe
  2. 3. this element's atomic symbol is Kr
  3. 4. this element's atomic symbol is Y
  4. 5. this element's atomic symbol is Cl
  5. 7. this element's atomic symbol is Zn
  6. 8. this element's atomic symbol is K