Given that: (i) Δ_f H^° of N_2 O is 82 kJ mol^-1 (ii) Bond energies of N ≡ N, N = N, O = O and N = O are 946, 418, 498 and 607 kJ mol^-1…

Given that :

$\displaystyle \Delta_f \mathrm{H}^{\circ}$ of $\displaystyle \mathrm{N}_2 \mathrm{O}$ is $\displaystyle 82 \mathrm{~kJ} \mathrm{~mol}^{-1}$

Bond energies of $\displaystyle \mathrm{N} \equiv \mathrm{N}, \mathrm{N}=\mathrm{N}, \mathrm{O}=\mathrm{O}$ and $\displaystyle \mathrm{N}=\mathrm{O}$ are $\displaystyle 946$, $\displaystyle 418$, $\displaystyle 498$ and $\displaystyle 607$ $\displaystyle \mathrm{kJ} \mathrm{mol}^{-1}$ respectively. The resonance energy of $\displaystyle \mathrm{N}_2 \mathrm{O}$ is :