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The relative strength of interionic / intermolecular forces in decreasing order is (1) ion-dipole > ion-ion > dipole-dipole (2) dipole-dipole > ion-dipole > ion-ion (3) ion-ion > ion-dipole > dipole-dipole (4) ion-dipole > dipole-dipole > ion-ion
- ion-dipole > ion-ion > dipole-dipole
- dipole-dipole > ion-dipole > ion-ion
- ion-ion > ion-dipole > dipole-dipole
- ion-dipole > dipole-dipole > ion-ion
Correct answer: dipole-dipole > ion-dipole > ion-ion
Solution
The correct option is based on the nature of the forces; ion-ion interactions are the strongest due to the full charges involved, followed by ion-dipole interactions which involve partial charges, and finally dipole-dipole interactions which are weaker as they rely on the alignment of polar molecules.
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