What is the strongest intermolecular force that occurs between molecules of h2s?

covalent bonding
dipole-dipole force
hydrogen bonding
london dispersion force

option B, Dipole-Dipole forces

Explanation:

By VESPER theory, shape of H2S is bent and Central atom Sulfur has two lone pair of electrons. Because of asymmetrical shape ,H2S is polar molecule.

Due to polar nature it has strong dipole-dipole intermolecular forces

Option (b) is the correct answer.

Explanation:

For example, hydrocarbons show dispersion forces due to difference in the electronegativity of its combining atoms.

A hydrogen bond will only exist if a compound has N. O, F atoms attached to the hydrogen atom.

Order of some forces in the order of increasing strength is as follows.

 Dispersion forces < dipole-induced dipole < dipole-dipole < hydrogen bonding < ion-dipole    

In molecule there will be no hydrogen bonding because there is no nitrogen, oxygen and fluorine atom.

But due to the difference in electronegativities of hydrogen and sulfur atom, there will be partial opposite charges on both the atoms. Hence, dipole-dipole forces will exist between the two.

Thus, we can conclude that dipole-dipole force is the strongest intermolecular force that occurs between molecules of .

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