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Among the given sets, which represents t...

Among the given sets, which represents the resonating structures ?

A

`H-C-=overset(+)N-overset(..)underset(..)O:^(-) and H - overset(..)underset(..)O-C-=N:`

B

`H-underset(..)overset(+)O=Coverset(..)N:^(-) and H-overset(..)underset(..)O-C-=N:`

C

`H-C-=overset(+)N-overset(..-)underset(..)O: and H - overset( :O: )overset(||)C-overset(..)N:`

D

` H-overset(..)underset(..)O-C-=N:^(-)and H-overset(..)N=C=overset(..)O:`

Text Solution

AI Generated Solution

The correct Answer is:
To determine which of the given sets represents resonating structures, we need to understand the concept of resonance in organic chemistry. Resonance occurs when there are multiple valid Lewis structures for a molecule that differ only in the arrangement of electrons, particularly pi electrons or lone pairs, while the positions of the atoms remain unchanged. ### Step-by-Step Solution: 1. **Identify Resonating Structures**: - Resonating structures must have the same arrangement of atoms but differ in the placement of electrons (specifically pi electrons or lone pairs). 2. **Examine Each Set**: - **Set 1**: Check if the structures differ only in electron placement. - In this set, the structures have different bonding arrangements (O-H vs. C-H), indicating they are different compounds, not resonating structures. - **Set 2**: Analyze the structures for electron movement. - Here, we have H-O⁺ and C≡N⁻. The negative charge can move to form a double bond between C and O, while the triple bond remains intact. This indicates that these structures can interconvert by the movement of electrons, thus they are resonating structures. - **Set 3**: Check for validity of resonance. - The structures in this set show a negative charge moving, but they result in a different compound due to the change in bonding (C-O bond appears in one structure but not in the other). Hence, they are not resonating structures. - **Set 4**: Analyze the changes in bonds. - In this case, while there is some movement of electrons, the resulting structure does not maintain the same connectivity of atoms, indicating they are different compounds, not resonating structures. 3. **Conclusion**: - After examining all sets, only **Set 2** represents valid resonating structures, as they maintain the same arrangement of atoms while differing in electron placement. ### Final Answer: The correct answer is **Set 2**. ---

To determine which of the given sets represents resonating structures, we need to understand the concept of resonance in organic chemistry. Resonance occurs when there are multiple valid Lewis structures for a molecule that differ only in the arrangement of electrons, particularly pi electrons or lone pairs, while the positions of the atoms remain unchanged. ### Step-by-Step Solution: 1. **Identify Resonating Structures**: - Resonating structures must have the same arrangement of atoms but differ in the placement of electrons (specifically pi electrons or lone pairs). 2. **Examine Each Set**: ...
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