in a single replacement reaction, ____ is the least active metal and ____ is the most active halogen.

a. zinc, iodine
b. nickel, bromine
c. silver, chlorine
d. gold, flourine

Question

in a single replacement reaction, ____ is the least active metal and ____ is the most active halogen.

a. zinc, iodine
b. nickel, bromine
c. silver, chlorine
d. gold, flourine

rogue · Answer

It's choice D. Gold is the least reactive metal in these choices (platinum is less reactive). Fluorine is the most reactive halogen due to its super strong electronegativity.