Determine which of the following isomers with the molecular formula C₂H₂F₂ does not have a dipole moment.

Based on the electrostatic potential maps given below, explain why the potential map of pyrrole is more red in the center while the potential map of pyrrolidine is more red at the bottom.

Arrange the bonds in a decreasing order of polarity.

C—O, C—F, C—S

Determine the compound with the most polar bond and the compound with the least polar bond among the compounds below:

CsF LiCl  H₂  NaCl

Using the concept of electronegativity, predict if a dipole (electronegativity difference ≥ 0.5) is present for each bond. If present, show the direction of the dipole moment.

(i) C—F

(ii) C=O

(iii) C≡N

(iv) C—Mg

Show the direction of the dipole moment for each of the compounds below (if applicable). Predict which will have the smaller dipole moment.