Periodic Table: Crossword Puzzle

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Across
  1. 4. Description of the elements on the left side of the periodic table
  2. 6. The number of groups on the periodic table
  3. 7. increases from left to right and decreases from top to bottom
  4. 8. Description of the elements on the right side of the periodic table
  5. 11. The number of noble gases on the periodic table
Down
  1. 1. Radii from left to right and increases from top to bottom
  2. 2. The first group of the periodic table
  3. 3. The element with an atomic number of 1
  4. 5. The person who created the periodic table in 1869 to show trends between elements
  5. 9. The second group of the periodic table
  6. 10. The number of periods there are on the periodic table