A) Which of the following elements form Dobereiner’s triads?
A. Li, Na, K
B. Ca, Sr, Ba
C. F, Cl, Br
D. Cl, Br, I
Answer:B
A) Which of the following elements form Dobereiner’s triads?
A. Li, Na, K B. Ca, Sr, Ba C. F, Cl, Br D. Cl, Br, I