Periodic Table

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Across
  1. 2. This form of classification is malleable
  2. 6. Recognized atomic number is the basis of organization for the periodic table
Down
  1. 1. The first person to create a periodic table arranged by increasing atomic mass
  2. 3. Made a periodic table with 28 elements
  3. 4. This classification contains properties of metals and nonmetals
  4. 5. This form classification are brittle and break easily