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← ScienceWhich molecular behavior arises when applying an external electric field to liquid hydrofluoric acid (HF)?
A)Alignment of HF dipole moments✓
B)Dissociation into H+ and F- ions
C)Breaking of covalent bonds in HF
D)Formation of metallic hydrogen
💡 Explanation
When an electric field is applied, the hydrogen fluoride molecules, possessing permanent dipole moments due to electronegativity difference, align themselves with the field because of electrostatic interactions, increasing the overall polarization. Therefore alignment is the primary outcome, rather than dissociation, bond breaking, or metallization, which require higher energy inputs.
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