Periodic table

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Across
  1. 2. Chemical name of Lead
  2. 4. hero of organic chemistry
  3. 5. Noble gas
  4. 7. first member of Chalcogens
  5. 8. metal of haem
Down
  1. 1. Common metal of brass and bronze
  2. 3. Father of periodic table
  3. 6. first and smallest element