Question

Define
⬇⬇
"DOBERENIER LAW OF TRIADS "

Answer 1

I hope it is helpful

Answer 2

Doberenier's law of triads states that :

When the elements are arranged in groups of three in increasing order of atomic masses, the
middle element of a group has atomic mass and properties roughly the average of other two elements.

eg: 1. Lithium Sodium potassium
2. Chlorine Bromine Iodine
3. Calcium Strontium Barium