Question

Which of the following is not a Dobereiners triad 

Cl,Br,I

Li,Na ,k

S,se ,Te

N, Na, k

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Answer 1

Answer:

I hope you would understand my answer

Explanation:

S, se, Te and N, Na ,k are not dobereiners triad

because doberieners triads are (Li, Na, k), (Ca, Sr, Ba),(Cl, Br, I) ..so (S, se, Te) and ( N, Na, K) is not a dobereiners triad...