alleryMolecularity of a reaction can never be:
AExactly one
BExactly two
CExactly three
DExactly zero
Answer & Solution
Correct answer: D. Exactly zero
1. Molecularity counts the species that must collide.
2. At least one species has to take part.
3. So molecularity can never be zero.
_Source: syllabus Chemistry Part I, Chapter 4, Chemical Kinetics._
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