Give use of Helium gas

Explanation

### Step-by-Step Text Solution:

1. **Identify the Properties of Helium**:
- Helium is lighter than air.
- Helium is a noble gas, which means it is unreactive and does not easily combine with other elements.

2. **Application in Balloons**:
- Due to its lightness, helium is commonly used to fill balloons. When balloons are filled with helium, they float in the air because helium is less dense than the surrounding air.
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