Navigating the Periodic Table

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Across
  1. 3. The only nonmetal in group 1
  2. 4. The name for the vertical columns
  3. 6. The name for group 1
  4. 9. The elements found along the stairstep
  5. 10. The creator of the periodic table
  6. 12. The name for group 2
  7. 14. The name of group 17
Down
  1. 1. The name for groups 3-12
  2. 2. The name of group 18
  3. 5. The only nonmetal that is a liquid
  4. 7. The mass of an atom of an element
  5. 8. The name for the horizontal rows
  6. 11. A transition metal with an atomic mass of 107.868
  7. 13. The least represented state of matter on the table