Chemistry - Chemical Kinetics Question with Solution | TestHub

For an elementary reaction, the molecularity is defined as the total number of reactant molecules participating in the reaction.

Given the elementary reaction: $\text{A}+\text{B}\to \text{products}$

The number of reactant molecules is $1$ (for $\text{A}$) $+1$ (for $\text{B}$) $=2$.

Therefore, the molecularity of the reaction is $2$.

Answer: 2