Question

Explain? Doebereiner's triads with its suitable example

Answer 1

dobernier 's triads : he arranged the elements together which have same charecteristics . According to Dobereiner, the atomic weight of the middle element is nearly the same as average of the atomic weights of other two elements.

example : Li,Na,K

the average of 7 and 39 =23 and 23 is the mass no of Na

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