Question 1:
Did Dobereiner’s triads also exist in the columns of Newlands’ Octaves? Compare and
find out.
Answer:
Only one triad of Dobereiner’s triads exists in the columns of Newlands’ octaves. The
triad formed by the elements Li, Na, and K of Dobereiner’s triads also occurred in the
columns of Newlands’ octaves.
Dobereiner’s triads
Li Ca Cl
Na Sr Br
K Ba I
Newlands’ octaves
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