Question

What is Dobernier trends

Answer 1

HERE IS YOUR'S ANSWER;

◆ The Dobernier's was the tried made when the elements are arranged in increasing order of the atomic masses.

◆ Three elements were taken under one group in which the Mean/Average of the atomic masses was equal to the element of the middle one placed between the other two.

◆ Li, Na,K ; Ca,Sr,Ba ; Kr, Br, I were three of the them.

◆ But the main problem was that only three of the trieds sustained only.


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