Chemistry

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Across
  1. 2. The twenty-eighth element on the periodic table
  2. 7. The third element on the periodic table
  3. 8. The thirty-first element on the periodic table
  4. 9. The thirtieth element on the periodic table
  5. 11. The last element on the periodic table
Down
  1. 1. The sixty-fifth element on the periodic table
  2. 3. The first element on the periodic table
  3. 4. The second element on the periodic table
  4. 5. The twenty-seventh element on the periodic table
  5. 6. The hundred and eighth element on the periodic table
  6. 10. The twenty-sixth element on the periodic table
  7. 12. The tenth element on the periodic table