alleryMolecularity counts the species that must collide:
AVery slowly
BSimultaneously
COne by one
DNow and then
Answer & Solution
Correct answer: B. Simultaneously
1. The species must meet together for the step to happen.
2. A staggered arrival would not do.
3. So they must collide simultaneously.
_Source: syllabus Chemistry Part I, Chapter 4, Chemical Kinetics._
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