Question

which reaction would be predicted by the activity series list?
a. a metal replaces a metallic ion below it on the list.
b. a metal replaces a metallic ion above it on the list.
c. a metal ion reacts with another ion to form a precipitate.
d. a metal reacts with oxygen in a combustion reaction.

Explanation:

The activity series lists metals in order of decreasing reactivity. A more reactive metal (higher on the list) can displace a less reactive metal (lower on the list) from its compound. So a metal can replace a metallic ion below it on the list.

Answer:

A. A metal replaces a metallic ion below it on the list.