The Periodic Table

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Across
  1. 3. special name for Group VII elements
  2. 6. found on the left of the table
  3. 7. element with symbol Na
  4. 9. elements are arranged based on increasing
  5. 12. horizontal rows of elements
Down
  1. 1. all elements in Group III have __ valence electrons
  2. 2. element with e.c = 2, 8, 8, 1
  3. 4. special name for Group I elements
  4. 5. elements whose symbol is Cu
  5. 8. between groups II and III are the __ elements
  6. 10. matter made up of one kind of atom
  7. 11. the vertical columns of elements