Explain the following
Reactivity of Al decreases if it is dipped in `HNO_(3)`

Explanation

To explain why the reactivity of aluminum (Al) decreases when it is dipped in nitric acid (HNO3), we can break down the explanation into several steps:

### Step-by-Step Solution:

1. **Understanding the Reactivity of Aluminum**:
- Aluminum is a highly reactive metal. It readily reacts with acids and bases, which is why it is often used in various chemical reactions.

2. **Introduction to Nitric Acid (HNO3)**:
...