In which of the following is the first resona | vedclass

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(D) To determine the stability of resonating structures,we follow these rules:$1$. Structures with more covalent bonds are more stable.$2$. Structures

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(D) To determine the stability of resonating structures,we follow these rules:$1$. Structures with more covalent bonds are more stable.$2$. Structures with complete octets for all atoms are more stable.$3$. Structures with negative charge on more electronegative atoms and positive charge on less electronegative atoms are more stable.In option $A$,structure $(I)$ is a phenoxide ion (aromatic,stable),while structure $(II)$ is a non-aromatic cyclohexadienone derivative with separated charges. Thus,$(I)$ is more stable than $(II)$.In option $B$,$(I)$ has complete octets for all atoms,whereas $(II)$ has an incomplete octet on carbon. Thus,$(I)$ is more stable than $(II)$.In option $C$,structure $(I)$ has a positive charge on a carbon atom adjacent to a double bond,while $(II)$ has a positive charge on a carbon atom that is not adjacent to the double bond in a way that allows for resonance stabilization. However,comparing the two,$(I)$ is generally considered more stable due to better conjugation. In option $D$,structure $(I)$ has the negative charge on the nitrogen atom,which is less electronegative than oxygen. Structure $(II)$ has the negative charge on the oxygen atom. Since oxygen is more electronegative than nitrogen,the structure with the negative charge on oxygen $(II)$ is more stable than the one with the negative charge on nitrogen $(I)$. Therefore,$(I)$ is less stable than $(II)$.

In which of the following is the first resonating structure less stable compared to the second one?

Similar Questions

For the given compounds,the correct order of resonance energy is:
$(I)$ $CH_2=CH-CH=CH-OCH_3$
$(II)$ $CH_2=CH-C(OCH_3)=CH_2$
$(III)$ $CH_2=CH-OCH_3$

Which of the following species does not exert a resonance effect?

Draw other resonance structures related to the following structure and find out whether the functional group present in the molecule is ortho,para directing or meta directing.

Identify the compound in which steric inhibition of resonance is present.

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