Define the following terms :
Corrosion of metals

Explanation

### Step-by-Step Text Solution:

**Step 1: Definition of Corrosion of Metals**
Corrosion of metals refers to the gradual degradation or deterioration of metals due to chemical reactions with their environment. This process often involves the reaction of metals with oxygen, moisture, and other chemicals present in the atmosphere.

**Step 2: Key Factors in Corrosion**
The primary factors that contribute to the corrosion of metals include:
- **Oxygen (O2)**: Present in the air, it reacts with metals.
...