modern periodic table

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Across
  1. 4. The element which can be placed in group 1 as well as group 17
  2. 6. Group 1 consist of _______ metals
  3. 8. The vertical columns in the periodic table are known as
  4. 9. a zig-zag line separates metals from________
  5. 10. horizontal rows in the periodic table are known as
Down
  1. 1. Number of _____ remains same across periods
  2. 2. it has electronic configuration of 2,8,7
  3. 3. _______ remains same across groups
  4. 5. It has electronic configuration of 2,6
  5. 7. The person who created modern periodic table