Which is the incorrect match for the given compounds ?

Options

A. Napthalene`" : "`Homocyclic `&` Aromatic
B. Pyridine`" : "`Hetrocyclic `&` Aromatic
C. Methylcyclopentane`" : "`Homocyclic `&` Saturated
D. Neopentane`" : "`Acyclic `&` Unsaturated

Explanation

To solve the question of identifying the incorrect match for the given compounds, we will analyze each option provided in the question step by step.

### Step 1: Analyze Naphthalene
- **Compound**: Naphthalene
- **Given Match**: Homocyclic and Aromatic
- **Analysis**:
- Naphthalene consists of two fused benzene rings, making it a cyclic compound.
- It contains only carbon and hydrogen atoms, which classifies it as homocyclic.
- It follows the Huckel rule for aromaticity (4n + 2 π electrons, where n = 1).
- **Conclusion**: The match is correct.

### Step 2: Analyze Pyridine
- **Compound**: Pyridine
- **Given Match**: Heterocyclic and Aromatic
- **Analysis**:
- Pyridine has a six-membered ring with one nitrogen atom, making it heterocyclic.
- It is also aromatic as it follows the Huckel rule (6 π electrons).
- **Conclusion**: The match is correct.

### Step 3: Analyze Methyl Cyclopentane
- **Compound**: Methyl Cyclopentane
- **Given Match**: Homocyclic and Saturated
- **Analysis**:
- Methyl cyclopentane is a five-membered ring with a methyl group attached.
- All bonds in this structure are single bonds, indicating it is saturated.
- It contains only carbon and hydrogen atoms, making it homocyclic.
- **Conclusion**: The match is correct.

### Step 4: Analyze Neopentane
- **Compound**: Neopentane
- **Given Match**: Unsaturated
- **Analysis**:
- The structure of neopentane is (CH3)4C, which consists of all single bonds.
- Since there are no double or triple bonds present, neopentane is saturated.
- **Conclusion**: The match is incorrect as it is labeled as unsaturated.

### Final Answer
The incorrect match for the given compounds is **Neopentane**, which is incorrectly labeled as unsaturated.

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