In this formula, Collision Frequency uses Number Density for A Molecules, Number Density for B Molecules, Collisional Cross Section, Time in terms of Ideal Gas & Reduced Mass of Reactants A and B. We can use 1 other way(s) to calculate the same, which is/are as follows -
Collision Frequency = Number Density for A Molecules*Number Density for B Molecules*Velocity of Beam Molecules*Cross Sectional Area for Quantum