Question

Dobereiner Traids are ______ .
(a) Cl,Br,I
(b) S,Se,Fe,Te,Co,Ni
(c) Li,Na,K
(d) all​

Answer 1

Answer:

Li, Na ,K

#option c is your answer

Answer 2

Answer:

Cl,Br,I

Explanation:

Hope it helps......