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Chemical Formulae

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Question

According to Dobereiner's law of triads the number of elements present in each group is:

A

3

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B

2

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C

4

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D

5

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Solution

The correct option is A
3

According to Dobereiner's law of triads each triad contains three elements. He also noticed that the middle element of each of the triad had an atomic weight about half way between atomic weights of the other two.

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