Question

WHY NITROGEN DIFFUSES FASTER THEN CHLORINE

Answer 1

The rate of diffusion of a gas depends on the weight of the gas molecules.  The heavier the molecules the slower they move . The lighter the molecules  the faster they move . Chlorine molecules weight 71 unit , so we would  expect nitrogen to diffuse more quickly than chlorine.

Answer 2

It is obvious that the smaller the molecular weight, the greater is the speed of the molecules of gas.

As chlorine gas has a molar weight of Cl2=71g and nitrogen has a molar weight of N2 28g , it is expected that the molecules of chlorine will diffuse slower compared to the molecules of nitrogen

Hope this will help you.