What are isomers ? Write the isomers of butane and pentane.

Explanation

### Step-by-Step Solution:

**Step 1: Define Isomers**
Isomers are compounds that have the same molecular formula but differ in their structural formula or spatial arrangement. This means that while they contain the same number and types of atoms, the way these atoms are connected or arranged in space is different.

**Step 2: Identify the Isomers of Butane**
- Butane has the molecular formula C4H10.
- The two isomers of butane are:
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