Question

what is mean't by Doberenier's triads

Answer 1

Answer:

it is german scientist Dobereniers

Explanation:

He made groups of three elements each having similar chemical properties and called them Dobereniers triads and triads

Answer 2

Explanation:

dominar grouped the element into triads dominar so that when the three element in a driver arrange in the order of increasing atomic mass is the atomic masses of the middle element was roughly the average of the atomic masses of the other two elements