Answer the following question given this paragraph: 

The number of reactant molecules in an elementary step is referred to as its molecularity. The vast majority of elementary steps are unimolecular or bimolecular.


Q: What property is associated with the number of reactant molecules involved in an elementary step?

 Choices:

- kilocalorie

- pollenation

- Molecules

- molecularity

A:
molecularity
