1.

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

Answer»

Solution :YES, we can identify the following triads:
`H, F, CI`
`Li, Na, K`
`Be, Mg, Ca`
`B, AI, Cr`
The atomic MASS of the middle atom in the above triads is approximately equal to the average mass of the elements on the LEFT and right hand side.


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