Relation between Neopentane and `n-` pentane is ?

Options

A. a. Homologues
B. b. Chain isomer
C. c. Position isomers
D. d. No relation

Answer

To determine the relationship between neopentane and n-pentane, we need to analyze their structures and classify them accordingly. Here’s a step-by-step solution:

### Step 1: Understand the Structures
- **n-Pentane** is a straight-chain alkane with five carbon atoms. Its structure can be represented as:
```
CH3-CH2-CH2-CH2-CH3
```
- **Neopentane** (also known as 2,2-dimethylpropane) has a branched structure with the same number of carbon atoms. Its structure can be represented as:
```
CH3
|
CH3- C - CH3
|
CH3
```

### Step 2: Count the Carbon and Hydrogen Atoms
- Both n-pentane and neopentane contain 5 carbon atoms (C) and 12 hydrogen atoms (H).
- n-Pentane: C5H12
- Neopentane: C5H12

### Step 3: Identify the Type of Isomerism
- Since both compounds have the same molecular formula (C5H12) but different structural arrangements, they are classified as **isomers**.
- Specifically, they are **chain isomers** because the difference arises from the arrangement of the carbon chain (one is straight and the other is branched).

### Step 4: Conclusion
- The relationship between neopentane and n-pentane is that they are **chain isomers**.

### Final Answer
The correct relation between neopentane and n-pentane is that they are **chain isomers**.

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