How did Dobereiner classify the elements? Give one example of what wer – InterviewSolution

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1.	How did Dobereiner classify the elements? Give one example of what were the limitations of this classification.
Answer» Solution :He classified in group of three such that atomic No. of middle elements is average of first and third element. Eg: Li(7), Na(23), K(39), LIMITATIONS : * Dobereiner could find only three TRIADS, i.e. total of 9 elements only. * However the total NUMBER of elements were more than that of those encompassed in Dobereiner.s triad. * THUS Dobereiner could not classify most of the elements known at that time..

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