Question

Did Dobereiner's triads also exist in the columns of Newlands Octaves?
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Answer 1

Yes, Dobereiner's triads also exist in the columns of Newlands Octaves.

For example, the second column of Newlands classification has the elements lithium (Li), sodium (Na) and Potassium (K), which constitute a Dobereiner's triad

Answer 2

Answer:

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Yes, Dobereiner’s triads also existed in the columns of Newland’s Octaves.

For example, Li, Na, K.

If we consider lithium (Li) as the first element, then sodium (Na) is eighth element. If we consider sodium as the first element, then potassium is the eighth element.