Periodic table

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Across
  1. 2. The 18 vertical (up/down) columns of elements in the periodic table
  2. 4. are located on the right side of the periodic table and usally bond with metals or themselves
  3. 7. Elements in family 1 These metals have 1 outer electron and are highly reactive with non-metals
  4. 8. Elements in families 3 through 12 These metals are less active in combining then those in families 1 or 2
  5. 9. are located on the left side of the periodic table and commonly form bonds with nonmetals to make compounds
Down
  1. 1. Elements in family 17 These nonmetals have 7 outer electrons
  2. 3. display properties of both metals and nonmetals
  3. 4. Elements in family 18 These nonmetals have full outer energy levels
  4. 5. a tool used by chemists to help arrange the elements based on certain characteristics they share
  5. 6. The 7 horizontal (across) rows of elements in the periodic table