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sheaangel

  • 3 years ago

N THE 1800'S DMITRI MENDELEEV DEVISED THE FIRST PERIODIC TABLE BASED ON ____________

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  1. AskSamphysics
    • 3 years ago
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    i guess atomic number or mass number but not sure thou

  2. BTaylor
    • 3 years ago
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    periodic trends of reactivity and atomic number. Mass number, especially with the metals, was easily mixed up.

  3. Mikael
    • 3 years ago
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    Atomic numbers and Valence of the element deduced from the empirical formula of the metal oxides and other oxides.

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