Question

Which combination of characteristics is most likely to be associated with molecules having strong dipole-dipole interactions? I. polar bond II. asymmetric shape III. relatively low boiling point IV. large surface area

Answer 1

When the molecules hav e strong dipole -dipoleinteractions

i) the bonding in the molecule must be a polar bond, so that dipoles are creaated.

If the bonds are non -polar no dipoles are present.

Thus polar bond is associated with dipole-dipole interactions.

ii) due to the polarity and dipole -dipole interactions, the molecule does not remain symmetric.

Hence symmetric shape is associated with the dipole -dipole interactions.

iii) No .

the compounds with dipole-dipole interactions require more energy to reach the boiling stage/vapor as the attractions need to be broken. Thus they possess high boiling point.

iv) no.

Due to the dipole-dipole interactions between the molecules(ass0ciation ) the molecules comecloser , hence lead to less surface area.