Question

I want to learn how to identify dobereiners traidsfrom the group Mg(24.3) Ca(40.1) Sr(87.6)

Answer 1

Answer:

If we arrange all the atoms in their increasing order of atomic mass, the middle term in the triad is the arithmetic mean of the atomic masses of the other 2 elements. Applying this rule, the following triad is not a dobreiner's triad.