A is an element which is amongst Cu, Zn, Al and Fe. It shows following properties :
(a) One of its ore is rich in `A_(2)O_(3)`.
(b) `A_(2)O_(3)` is not affected by water.
(c ) IF forms two chlorides `Acl_(2)` and `Acl_(3)` Identify A.

Explanation

To identify the element A from the given options (Cu, Zn, Al, Fe) based on the properties provided, we will analyze each property step by step.

### Step 1: Analyze the first property
The first property states that one of its ores is rich in \( A_2O_3 \).

- **Copper (Cu)**: The common oxide is \( Cu_2O \) (copper(I) oxide), not \( A_2O_3 \).
- **Zinc (Zn)**: The oxide is \( ZnO \), not \( A_2O_3 \).
- **Aluminium (Al)**: The oxide is \( Al_2O_3 \), which fits this property.
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