The strength of dispersion forces depends on what characteristic in the molecule?

a) Polarizability of charge distribution

b) Electronegativity between atoms

c) Bond strengths between atoms

d) Bond lengths between atoms

Molecular Size

Larger and heavier atoms and molecules exhibit stronger dispersion forces than smaller and lighter ones. In a larger atom or molecule, the valence electrons are, on average, farther from the nuclei than in a smaller atom or molecule. They are less tightly held and can more easily form temporary dipoles.