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Date: 20-12-2020
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Date: 8-1-2017
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Each event that occurs in a chemical reaction as a result of an effective collision is known as an elementary step. The total number of molecules that participate in the effective collision of an elementary step is known as its molecularity. Molecularity can be used to classify elementary steps into three categories:
Unimolecular – Only one molecule participates
Bimolecular – Two molecules participate
Termolecular – Three molecules participate
There are only three main categories of molecularity because it is rare that more than three molecules participate simultaneously in an effective collision.
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