Point out the incorrect statement about resonance?

Options

A. Resonance structures should have equal energy
B. In resonance structures, the contituent atoms must be in the same position
C. In resonance structures, there should not be same number of electoron pairs
D. Resonance structures should differ only in the location of electrons around the constituent atoms.

Explanation

To determine the incorrect statement about resonance, let's analyze the statements provided regarding resonance structures step by step.

### Step-by-Step Solution:

1. **Understanding Resonance**:
Resonance refers to the phenomenon where a molecule can be represented by two or more valid Lewis structures (resonance structures) that differ only in the arrangement of electrons, not in the arrangement of atoms.

2. **Statement A**: "Resonating structures should have equal energy."
- This statement is incorrect. Resonance structures do not necessarily have to have equal energy. Some resonance structures can be more stable (lower energy) than others, depending on the arrangement of electrons and the atoms involved.

3. **Statement B**: "The constituent atoms must be in the same position in the resonance structures."
- This statement is correct. In resonance structures, the positions of the atoms remain unchanged; only the electrons are redistributed.

4. **Statement C**: "In resonance structures, there should not be the same number of electron pairs."
- This statement is correct. While the total number of electrons (including lone pairs and bonding pairs) must remain the same, the distribution of these electrons can vary between resonance structures.

5. **Statement D**: "Resonant structures should differ only in the location of electrons around the constituent particles."
- This statement is also correct. Resonance structures differ only in the placement of electrons, not in the arrangement of atoms.

6. **Conclusion**:
The incorrect statement about resonance is Statement A: "Resonating structures should have equal energy."

### Final Answer:
The incorrect statement about resonance is Statement A.

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