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The enthalpy of formation of UF(g) is 22...

The enthalpy of formation of `UF(g)` is `22kcal mol^(-1)` and that of `U(g)` is `128kcal mol^(-1)`.
The bond energy of the `F-F` bond is `37kcal mol^(-1)` . The bond dissociation energy of `UF(g)` is `(are):`

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