Periodic Table

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1234567891011121314
Across
  1. 2. A vertical division of something
  2. 3. Period 7, group 1
  3. 6. Period 1, group 1
  4. 7. Period 4, group 9
  5. 11. Period 2, group 14
  6. 12. Period 4, group 6
  7. 14. Period 4, group 13
Down
  1. 1. Period 2, group 18
  2. 4. Period 4, group 8
  3. 5. Period 4 group 11
  4. 6. Period 1, group 18
  5. 8. a number of people or things that are located close together or are considered or classed together.
  6. 9. Period 4, group 10
  7. 10. Period 5, group 14
  8. 13. Period 7, group 2