periodic table crossword

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Across
  1. 2. who's table was published
  2. 5. ductile
  3. 6. semiconductor
  4. 7. never found pure
  5. 10. who developed the first unofficial periodic table
  6. 12. iron is a
  7. 14. most reactive nonmetals
  8. 15. these metals are ductile
  9. 16. low melting point
Down
  1. 1. whose table had 28 elements
  2. 3. most reactive metals
  3. 4. silicon is a
  4. 8. hydrogen is a
  5. 9. have full valence electrons shells
  6. 11. radioactive
  7. 13. rare metals