Identify the group which is not a Dobereiner triad
Q. Identify the group which is not a Dobereiner triad
A. Li, Na, K
B. Be, Mg, Cr
C. Ca, Sr, Ba
D. Cl, Br, I
Answer: Be, Mg, Cr
A. Li, Na, K
B. Be, Mg, Cr
C. Ca, Sr, Ba
D. Cl, Br, I
Answer: Be, Mg, Cr