AP Chemistry
6.7 Bond Enthalpies
1.7 Periodic Trends
Multi-Unit
A student investigates the thermodynamic stability and bond strengths of hydrogen halide molecules. The atomic radii of selected halogen elements are shown in the table below.
Which of the following correctly ranks the \(\text{H}-\text{X}\) bond dissociation energies from greatest to least, and provides the best justification?
| Halogen | Atomic radius (pm) |
|---|---|
| \(\text{F}\) | \(42\) |
| \(\text{Cl}\) | \(79\) |
| \(\text{Br}\) | \(94\) |
Which of the following correctly ranks the \(\text{H}-\text{X}\) bond dissociation energies from greatest to least, and provides the best justification?
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