Question

limitation of dobernier law of triods

Answer 1

1.During Dobereiner's period all elements were not known and also atomic mass was not known accurately.
2.Dobereiner discovered few triads among all the elements.
3.He could not classify all known elements into triads.

Answer 2

$two \: important \: dobernier \: \\ limitations \: are$
All known elements could not be classified into groups of traids on the basis of their properties .

Not all groups obeyed the law of traids .

For EX. :
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Nitrogen family doesn't obeyed the law of traids .

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