Periodic Table

By facebooker_100001991631066

  • Elements

    9 elements had been dicovered by 1860
  • Period: to

    elements

  • doberiener

    average of two other members

  • Triads

    middle element is the average from the one in the middle

  • Periodicity

    the table was then made by order of periodicity

  • Mendeleev

    Mendeleev dicovered valency ,acading, vertical colours

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