Question

dobereiner triad explain..........​

Answer 1

Answer:

Dobereiner was among the early scientists who worked on classification of elements..

He arranged certain elements with similar properties in groups of three in such a way that the atomic mass of the middle element was nearly the same as the average atomic masses of the first and third elements.

For example:

Triad: lithium sodium potassium

Atomic mass: 7, 23, 39

Atomic mass of Na =(39+7)/2= 23

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Answer 2

Explanation:

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. .Dobereiners law of triads states that when three elements are taken in increasing order of atomic masses then the average of the atomic masses first and third element is equal to the atomic mass of the middle element.