Identify the relationship between the following two structures: $\begin{matrix} \overset{\Theta}{\overset{\centerdot \,\centerdot}{C}}H_2-C(=O)-CH_3 \end{matrix}$ and $\begin{matrix} CH_2=C(O^{\Theta})CH_3 \end{matrix}$

  • A
    Resonance structures
  • B
    Tautomers
  • C
    Geometrical isomers
  • D
    Optical isomers

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Which of the following can show resonance?

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Draw the resonance structures of the following compounds.
$(a)$ $CH_2=CH-Cl:$
$(b)$ $CH_2=CH-CH=CH_2$
$(c)$ $CH_2=CH-CHO$

Given that:
$(i) \Delta_f H^o$ of $N_2O$ is $82 \ kJ \ mol^{-1}$
$(ii)$ Bond energies of $N \equiv N, N = N, O = O$ and $N = O$ are $946, 418, 498$ and $607 \ kJ \ mol^{-1}$ respectively.
The resonance energy of $N_2O$ is $...... \ kJ \ mol^{-1}$.

Resonance structures can be written for

Compound in which all $C-N$ bond lengths are not same:

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