Which factor is responsible for the weak attraction between diatomic molecules of the halogens (group 7a)?

a) hydrogen bonding
b) ionic bonding
c) dipole interactions
d) london dispersion forces

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.

the correct answer to this question is 2