Question

27. Write down any two drawbacks of Dobereiner classification ​

Answer 1

Answer:

Drawback of Dobereiner's triads:

Dobereiner could identify only three triads. He was not able to prepare triads of all the known elements.

All the known elements could not be arranged in the form of triads.

For very low mass or for very high mass elements, the law was not holding good. Take the example of F, Cl, Br.

Answer 2

Answer:

Drawback of Dobereiner's triads:

Dobereiner could identify only three triads. He was not able to prepare triads of all the known elements.

All the known elements could not be arranged in the form of triads.

For very low mass or for very high mass elements, the law was not holding good. Take the example of F, Cl, Br.

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