Q. Which of the following is the third member of the Dobereiner triad, that also features Lithium and Sodium?
A) Boron
B) Potassium
C) Hydrogen
D) Barium
✔ Correct Answer: Potassium
Exam Insight
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A) Boron
B) Potassium
C) Hydrogen
D) Barium
✔ Correct Answer: Potassium
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