Question

why was dobereiner's system not found useful???​

Answer 1

Answer:

According to Dobereiner , groups of three elements in a triad in an increasing order of atomic mass and showed that atomic mass of the middle element was approximately equal to the mean of the atomic masses of the other two elements. However, all the known elements could not be classified into Dobereiner's triads. Therefore, Dobereiner's System not found useful.

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