Home » Pick out the chemically most reactive elements from the given triads Periodic Table MCQs Pick out the chemically most reactive elements from the given triads April 14, 2022 32 Views Q. Pick out the chemically most reactive elements from the given triads. Li, Na, K F, Cl, Br A. Li and F B. Li and Br C. K and F D. K and Br Answer: K and F