Which of the following is the most stable can | vedclass

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

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$C^{-}H_2 - N^{+} \equiv N$

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(B) To determine the stability of canonical 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. $3$. Negative charge on a more electronegative atom and positive charge on a less electronegative atom is more stable. Analyzing the structures: - Structure $A$: $CH_2 = N^{+} = N^{-}$ has $7$ bonds. - Structure $B$: $C^{-}H_2 - N^{+} \equiv N$ has $7$ bonds and all atoms $(C, N, N)$ have complete octets. - Structure $C$: $C^{+}H_2 - N = N^{-}$ has $6$ bonds and the carbon atom has an incomplete octet. Comparing $A$ and $B$,structure $B$ is more stable because all atoms have complete octets,whereas in $A$,the terminal carbon has an incomplete octet ($6$ electrons). Therefore,$B$ is the most stable.

Which of the following is the most stable canonical structure among all?

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