(i) It considers reacting molecules or atoms to be hard spheres and ignores their structural features.
(ii) A number of effective collisions determine the rate of reaction.
(iii) The collision of atoms or molecules possessing sufficient threshold energy results into the product formation.
(iv) Molecules should collide with sufficient threshold energy and proper orientation for the collision to be effective.
Correct Answer: (iii) The collision of atoms or molecules possessing sufficient threshold energy results into the product formation
Explanation: The collision of atoms or molecules possessing sufficient threshold energy does not result in the product formation.