Ethane may react with fluorine to form $1,2$-difluoroethane, $\text{C}_2\text{H}_4\text{F}_2$. $\text{C}_2\text{H}_6 + 2\text{F}_2 \rightarrow \text{C}_2\text{H}_4\text{F}_2 + 2\text{HF} \qquad \Delta H = -960\,\text{kJ mol}^{-1}$ Bond energies are provided. Calculate the bond energy of the $\text{C-F}$ bond in $1,2$-difluoroethane.
- A$407\,\text{kJ mol}^{-1}$
- B$474\,\text{kJ mol}^{-1}$
- C$486\,\text{kJ mol}^{-1}$
- D$972\,\text{kJ mol}^{-1}$