See image — GOC and Organic Chemistry Basics Chemistry Question

💡 Solution & Explanation

# Analysis of Resonating Structures for Nitroso Compound ## Key Principle The most stable resonating structure minimizes formal charges and distributes negative charges on more electronegative atoms. ## Evaluating Each Option **(A)** Has charges $\oplus$ and $\ominus$ on benzene rings (less electronegative centers). Formal charges are separated, destabilizing. **(B)** Places $\oplus$ charges on benzene carbons and $\ominus$ on nitrogens. This creates unfavorable formal charges on carbon atoms. **(C)** Shows $\oplus$ charges directly on nitrogen atoms (forming $N=O^+$ bonds). Positive charge on nitrogen is highly unfavorable. **(D)** Has: - $\ominus$ charge on oxygen (most electronegative atom) ✓ - $\oplus$ charge on nitrogen in the nitroso group (N=O becomes $^-N=^+O$) - Aromatic $\pi$ electrons delocalized through both benzene rings - Charges are on appropriate atoms; negative charge resides on the most electronegative element ## Why (D) is Correct **Option (D)** is most stable because: 1. Negative formal charge is on **oxygen** (highest electronegativity) 2. Maintains aromaticity in both benzene rings through resonance 3. Positive charge on nitrogen is acceptable within the nitroso functional group context 4. Minimizes unfavorable charge distributions **Answer: (D)**