If the two members of a Dobereiner triad are chlorine and iodine, the third member of this triad is HomePeriodic Table MCQsIf the two members of a Dobereiner triad are chlorine and iodine, the third member of this triad is Share your love WhatsApp Facebook Telegram Twitter Pinterest Q. If the two members of a Dobereiner triad are chlorine and iodine, the third member of this triad is : A. Fluorine B. Bromine C. Sodium D. Calcium Answer: Bromine