Question

what is doberiener triads​

Answer 1

Doberiener’s traids were group of element with similar properties that were identified by the German chemist JOHANN WOLFGANG DOBEREINER. He observed that groups three elements (traids) could be formed in which all the elements shared physical and chemical Properties.

Answer 2

Doberenier's triad is a group of three elements in which atomic weight of middle element is the average of first and third elements.