Answer :

Final answer:

Mendeleev's table predicted undiscovered elements, while Meyer's focused on simple atomic properties and arrangements.


Explanation:

Two differences between Mendeleev's Periodic Table and Meyer's Periodic Table:

  1. Mendeleev's Prediction: Mendeleev's table included gaps for undiscovered elements based on their properties, like the prediction of gallium and germanium.
  2. Arrangement: Mendeleev arranged elements according to increasing atomic mass, while Meyer focused on simple atomic properties like atomic volume.

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