Based on the Following Data, What Is the F-F Bond

Multiple Choice

Based on the following data, what is the F-F bond energy?
${ }^{\frac{1}{2}} \mathrm{H}_{2}(\mathrm{~g}) +{ }^{\frac{1}{2}} \mathrm{~F}_{2}(\mathrm{~g}) \rightarrow \mathrm{HF}(\mathrm{g}) ; \Delta_{r} H=-272.5 \mathrm{~kJ} / \mathrm{mol}-\mathrm{rxn}$

$\begin{array}{ll}Bond &Bond~Energy(kJ/mol) \\\text { H-H } & 435 \\\text { H-F } & 565\end{array}$

A) 500 kJ/mol
B) 150 kJ/mol
C) -150 kJ/mol
D) -695 kJ/mol
E) 695 kJ/mol