Question

Which of the following molecules is most likely to show a dipole dipole interaction?

a. ch₄,
b. h-c=c-h,
c. h₂s,
d. co₂

Answer 1

Among the given options, hydrogen sulfide (H2S) is the molecule most likely to exhibit dipole-dipole interactions due to its bent molecular geometry and resulting permanent dipole moment.

Step-by-step explanation:

The question is about identifying which molecule among the given options most likely exhibits dipole-dipole interactions. Dipole-dipole interactions occur between molecules that have regions of partial positive and negative charges, meaning the molecules must be polar. Methane (CH4) and ethene (H-C=C-H) are nonpolar molecules due to their symmetrical geometry, and carbon dioxide (CO2) is also nonpolar because of its linear shape which allows the dipole moments to cancel each other out. On the other hand, hydrogen sulfide (H2S) has a bent molecular geometry according to VSEPR theory and Lewis dot structures, leading to a permanent dipole moment. Therefore, the most significant force in H2S is dipole-dipole interaction.