Problem: Which species has London dispersion forces as the ONLY intermolecular force?A) CH3CH2OHB) ArC) NH3D) HBrE) H2O

FREE Expert Solution

We’re being asked to identify the species that has London dispersion forces as the ONLY intermolecular force. Recall that there are several types of intermolecular forces:

1. Ion-dipole interaction – occurs between an ion and a polar covalent compound

2. Hydrogen bonding – occurs in compounds where hydrogen is directly connected to an electronegative element such as N, O, or F

3. Dipole-dipole interaction – occurs between two polar covalent compounds

4. Induced-dipole interaction – occurs when a nonpolar compound interacts with a polar compound

5. Dispersion forces – occurs in all compounds. This is the primary intermolecular force exhibited by nonpolar compounds.


For this problem, we need to do the following steps:

Step 1: Determine the central atom in this molecule.

Step 2: Calculate the total number of valence electrons present and draw the Lewis structure for the molecule.

Step 3: Determine the polarity and IMF of the molecule.


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Problem Details

Which species has London dispersion forces as the ONLY intermolecular force?

A) CH3CH2OH

B) Ar

C) NH3

D) HBr

E) H2O

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Intermolecular Forces concept. You can view video lessons to learn Intermolecular Forces. Or if you need more Intermolecular Forces practice, you can also practice Intermolecular Forces practice problems.