Question

Identify the strongest type of intermolecular force in the liquid state of each of these compounds. OF2 [Select] SFA (Select] BH: [Select]

Answer 1

OF2:

OF2 molecule have bent shape.

F is more electronegative than O.

so

O is delta positive and F is delta negative.

thus

OF2 is polar molecule.

strongest intermolecular force is dipole-dipole interaction.

SF4:

Its shape is like see saw.

F is more electronegative than S.

Its have dipole moment.

so

strongest intermolecular force is dipole-dipole interaction.

BH3:

dipole moment is zero because bond moments are cancel out. Its shape is trigonal planar.

strongest intermolecular force is London dispersion force.