Mark the incorrect statement from the following

Options

A. Benzene has a planar structure
B. Benzene is an unsaturated hydrocarbon and shows addition reactions like alkenes.
C. In benzene carbon uses two p-orbitals for hybridisation
D. aromatic hydrocarbons contain high percentage of carbon hence burn with sooty flame.

Explanation

To solve the question of identifying the incorrect statement regarding benzene, we will analyze each statement provided about benzene and determine its validity step by step.

### Step 1: Analyze the statements one by one.

1. **Statement 1**: Benzene has a planar structure.
- **Analysis**: Benzene is indeed a planar molecule due to the sp² hybridization of its carbon atoms. Each carbon atom in benzene is bonded to two other carbon atoms and one hydrogen atom, forming a planar hexagonal ring. This statement is **correct**.

2. **Statement 2**: Benzene is an unsaturated hydrocarbon.
- **Analysis**: Benzene contains alternating single and double bonds (though these are actually resonance structures), which makes it unsaturated. Therefore, this statement is also **correct**.

3. **Statement 3**: Benzene can show addition reactions like alkenes.
- **Analysis**: Benzene does not readily undergo addition reactions like alkenes due to the stability provided by its delocalized pi electrons. Instead, it typically undergoes substitution reactions. This statement is **incorrect**.

4. **Statement 4**: In benzene, carbon uses two p-orbitals for hybridization.
- **Analysis**: Each carbon in benzene uses one p-orbital to form a pi bond with adjacent carbons, while the other p-orbital is involved in bonding with hydrogen. This statement is **correct**.

5. **Statement 5**: Aromatic hydrocarbons contain a high percentage of carbon.
- **Analysis**: Aromatic hydrocarbons, including benzene, indeed have a high carbon content, which can lead to sooty flames when burned. This statement is **correct**.

### Conclusion:
Based on the analysis of each statement, the incorrect statement is **Statement 3**: "Benzene can show addition reactions like alkenes."

### Final Answer:
The incorrect statement is: **Benzene can show addition reactions like alkenes.**

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