Hydrogen bond (typical strength scale) (H-bond ~10–40 kJ mol⁻¹: much weaker than a covalent bond (~200–800 kJ mol⁻¹))
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H-bond ~10–40 kJ mol⁻¹ — much weaker than a covalent bond (~200–800 kJ mol⁻¹)
What each symbol means
| Symbol | What it stands for |
|---|---|
| E_HB | Hydrogen-bond dissociation energy (order of magnitude) |
| E_covalent | Typical covalent bond enthalpy for comparison |
When to use this
Occurs when H is bonded to F, O, or N and interacts with lone pair on F, O, or N. Strongest for F–H···F.