Periodic Table

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Across
  1. 4. another name for group 0/8
  2. 5. a vertical column in the periodic table
  3. 6. the lightest element
  4. 8. an alkali metal
Down
  1. 1. a transition metal found in red blood cells
  2. 2. another name for group 7
  3. 3. a horizontal row in the periodic table
  4. 7. the lightest metal