What type of isomerism is shown by isopentane and neopentane?

Explanation

To determine the type of isomerism shown by isopentane and neopentane, we can follow these steps:

### Step 1: Identify the Structures
- **Isopentane** (also known as 2-methylbutane) has the following structure:
- CH3-CH(CH3)-CH2-CH3
- **Neopentane** (also known as 2,2-dimethylpropane) has the following structure:
- (CH3)4C

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