Answer:
H2O- hydrogen bonding
CaCl2- ion-ion interaction
CH3CH(CH3)OH- hydrogen bonding
CH4- dispersion forces
NH3- hydrogen bonding
Explanation:
Intermolecular forces are secondary bond forces that hold the molecules of a substance together in a given state of matter.
Intermolecular forces account for quite a number of the observed physical properties of a substance such as the boiling and melting point.
If a compound contains hydrogen atom bonded to a highly electronegative element, hydrogen bonding becomes the most dominant intermolecular force, e.g in water and ammonia.
For nonpolar molecules, dispersion forces are the most dominant intermolecular forces. In ionic substance, ion-ion interaction becomes quite prominent.
