# Problem: Which of these molecules have dipole-dipole forces?a. Cl4b. CH3Clc. HCl

###### FREE Expert Solution

We’re being asked to identify which of the following compounds have dipole-dipole forces. 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 the molecule.

Step 2: Calculate the total number of valence electrons present.

Step 3: Draw the Lewis structure for the molecule.

Step 4: Determine the IMF of the molecule.

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###### Problem Details

Which of these molecules have dipole-dipole forces?
a. Cl4
b. CH3Cl
c. HCl