In general, the strengths of the following intermolecular and intramolecular interactions increase in the order (putting the weakest first):hydrogen bonds, covalent bonds, dispersion forcescovalent bonds, dispersion forces, hydrogen bondsdispersion forces, hydrogen bonds, covalent bondscovalent bonds, hydrogen bonds, dispersion forces
Question
In general, the strengths of the following intermolecular and intramolecular interactions increase in the order (putting the weakest first):hydrogen bonds, covalent bonds, dispersion forcescovalent bonds, dispersion forces, hydrogen bondsdispersion forces, hydrogen bonds, covalent bondscovalent bonds, hydrogen bonds, dispersion forces
Solution
The correct order from weakest to strongest is: dispersion forces, hydrogen bonds, covalent bonds. So, the correct answer is "dispersion forces, hydrogen bonds, covalent bonds".
Here's why:
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Dispersion forces: These are the weakest intermolecular forces and occur between all molecules, polar or nonpolar. They arise due to temporary fluctuations in electron distribution within molecules, which create temporary partial positive and negative charges.
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Hydrogen bonds: These are stronger than dispersion forces. Hydrogen bonding occurs when a hydrogen atom bonded to a highly electronegative atom (like nitrogen, oxygen, or fluorine) is attracted to another electronegative atom in a different molecule.
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Covalent bonds: These are the strongest of the three and are intramolecular forces, meaning they hold atoms together within a molecule. Covalent bonds form when two atoms share one or more pairs of electrons.
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