Question

What is called molecularity?

Answer 1

Hey mate,  Here Is your answer  Definition of Molecularity.   The number of reactant molecular entities that are involved in the "microscopic chemical event" constituting an elementary reaction.  A reaction with a molecularity of one is called "unimolecular", one with a molecularity of two "bimolecular" and of three "termolecular.  Hope this helps you out!!✌  I would be glad if you Mark it as brainliest.