Question

the law of triads is not applicable on
a)cl,br,i
b)s,se,te
c)na,k,rb
d)ca,sr,ba

Answer 1

c) is the answer........

Answer 2

Answer:

The law of triads is not applicable on Na (Sodium) ,K (potassium) ,rb (Rubidium).

Explanation:

• Johann Dobereiner noticed in 1817 that strontium's atomic weight fell halfway between calcium and barium weights, components with comparable chemical properties.
• According to Dobereiner, when arranged in the increasing order of nuclear masses, all components took place in the group of three.
• These groups he referred to as triads. In traids, elements have similar chemical properties.

The traids are attached in the below attachment: