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Across
  1. 2. chemical element with the symbol P and atomic number 15
  2. 3. chemical element with the symbol Re and atomic number 75
  3. 5. chemical element with the symbol F and atomic number 9
  4. 7. the lightest element
  5. 9. chemical element with the symbol Bi and atomic number 83
  6. 10. element with the symbol Ag and atomic number 47
Down
  1. 1. chemical element with the symbol Br and atomic number 35.
  2. 3. chemical element with the symbol Rh and atomic number 45
  3. 4. chemical element with the symbol O and atomic number 8
  4. 6. chemical element with the symbol Nd and atomic number 60
  5. 8. is a chemical element with the symbol Rg and atomic number 111. It is an extremely radioactive synthetic element