Which of the following does not satisfy Huckel's rule?
(a) Benzene (b) 1, 3-cyclobutadiene (c) Naphthalene (d) Furan

Explanation

To determine which of the given compounds does not satisfy Huckel's rule, we need to analyze each compound based on the number of pi electrons they possess. Huckel's rule states that a compound is aromatic if it has \(4n + 2\) pi electrons, where \(n\) is a non-negative integer (0, 1, 2, 3,...).

Let's evaluate each option step by step:

### Step 1: Analyze Benzene
- **Structure**: Benzene has a cyclic structure with alternating double bonds.
- **Number of pi electrons**: Benzene has 6 pi electrons.
- **Huckel's rule check**:
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