Which of the following statements is not compatible with arenes?

Options

A. Electrophilic additions
B. Delocalisation of `pie`-electrons
C. Greater stability
D. Resonance

Answer

To determine which statement is not compatible with arenes, we need to analyze the characteristics of aromatic compounds, particularly benzene (C6H6). Here’s a step-by-step breakdown of the reasoning:

### Step 1: Understand the Structure of Arenes
Arenes, such as benzene, have a planar structure and consist of sp² hybridized carbon atoms. Each carbon atom in benzene is bonded to one hydrogen atom and has a p-orbital that contributes to the delocalization of π electrons.

**Hint:** Remember that the planar structure and sp² hybridization are key features of aromatic compounds.

### Step 2: Identify Resonance in Arenes
Resonance is a phenomenon where π electrons are delocalized across the carbon atoms in the ring. This delocalization provides stability to the molecule. Benzene can be represented by multiple resonance structures, which illustrate the movement of double bonds.

**Hint:** Think about how resonance contributes to the stability of the molecule and allows for different representations.

### Step 3: Discuss Stability Due to Delocalization
The stability of arenes is largely due to the delocalization of π electrons. This means that the electrons are not fixed in one position but are spread out over the entire ring, which lowers the overall energy of the molecule.

**Hint:** Stability from delocalization is a crucial aspect of aromatic compounds.

### Step 4: Analyze Electrophilic Addition
Electrophilic addition reactions are generally not favored in arenes due to their stable resonance structure. When an electrophile approaches an arene, it would disrupt this stable resonance, making such reactions less favorable. While electrophilic substitution reactions can occur (e.g., nitration), direct electrophilic addition is not typical for arenes.

**Hint:** Consider why the stability of the resonance structure makes electrophilic addition unfavorable.

### Step 5: Conclusion
Based on the analysis, the statement that suggests electrophilic addition occurs easily with arenes is not compatible. Instead, electrophilic substitution reactions are more characteristic of arenes due to their stable resonance structures.

**Final Answer:** The statement that is not compatible with arenes is that "electrophilic addition occurs easily."