Question

Explain dobereiner's law of triodes in your own way briefly?

Answer 1

Doberenier was the first scientists who tried to arranged the elements .He arranged elements in increasing atomic masses. He arranged 3 elements in a group ,the average of first and last elements masses is equal to middle one and that's why he called it "trait" (three). He was only able to arranged 9 elements which were known at that time .No other elements is fit in table except of that 9 .so his theory failed