In the given compound, the number of sigma (s | vedclass

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(A) The structure is $(NC)_2C=C(M(CO)_3)(C_2H_5)$.$1$. Two $NC$ groups: Each $N \equiv C$ has $1 \sigma$ and $2 \pi$ bonds. Total: $2 \sigma$ and $4 \

Vedclass · Accepted Answer

$19, 11$

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(A) The structure is $(NC)_2C=C(M(CO)_3)(C_2H_5)$.$1$. Two $NC$ groups: Each $N \equiv C$ has $1 \sigma$ and $2 \pi$ bonds. Total: $2 \sigma$ and $4 \pi$ bonds. The $C-C$ bonds connecting to the central carbon add $2 \sigma$ bonds.$2$. Central $C=C$ bond: $1 \sigma$ and $1 \pi$ bond.$3$. $M(CO)_3$ group: $3$ $M-C$ bonds $(3 \sigma)$. Each $C \equiv O$ has $1 \sigma$ and $2 \pi$ bonds. Total: $3 \sigma$ and $6 \pi$ bonds.$4$. $C_2H_5$ group: $1$ $C-C$ bond $(1 \sigma)$ and $5$ $C-H$ bonds $(5 \sigma)$. Total: $6 \sigma$ bonds.Summing the $\sigma$ bonds: $2(C-N) + 2(C-C) + 1(C=C) + 3(M-C) + 3(C-O) + 1(C-C) + 5(C-H) = 2 + 2 + 1 + 3 + 3 + 1 + 5 = 19 \sigma$ bonds.Summing the $\pi$ bonds: $4(C \equiv N) + 1(C=C) + 6(C \equiv O) = 4 + 1 + 6 = 11 \pi$ bonds.Thus, the correct option is $A$.

In the given compound, the number of sigma $(\sigma)$ and pi $(\pi)$ bonds are respectively:

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