Arrange the following metals in the order in whiCHM they displace eaCHM other from the solution of their salts. `Al, Cu, Fe, Mg, ` and `Zn`.

Explanation

To arrange the metals Al (Aluminum), Cu (Copper), Fe (Iron), Mg (Magnesium), and Zn (Zinc) in the order of their ability to displace each other from the solution of their salts, we need to consider their reducing powers, which are related to their positions in the electrochemical series.

### Step-by-Step Solution:

1. **Understanding Displacement Reactions**:
- A more reactive metal can displace a less reactive metal from its salt solution. The reactivity of metals can be determined by their reducing power.

2. **Electrochemical Series**:
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