Chapter 5: Periodic Classifications of Elements

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Q
Periodic Classifications of Elements

Question:

Did Dobereiner’s triads also exist in the columns of Newlands’ Octaves? Compare and find out.

Answer:

Dobereiner arranged elements in the form of triads. These triads also exist in the columns of Newlands’Octaves. For example,  Doberiener gave a triad of lithium, sodium, and potassium. These three elements are present in the same column of the classification done by Newland.


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