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
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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