Periodic Table

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Across
  1. 1. a vertical column grouped by properties
  2. 4. most elements are
  3. 6. created a periodic table by arranging elements by properties
  4. 8. number of periods on the table
Down
  1. 2. Most abundant element in Earth's crust.
  2. 3. elements in the same family that share physical properties
  3. 5. Horizontal row
  4. 7. number of columns on the periodic table