According to the microscopic postulates of Collision Theory, the Steric Factor () is a crucial dimensionless parameter in the master rate equation. What physical requirement does strictly account for?

Question

According to the microscopic postulates of Collision Theory, the Steric Factor ($P$) is a crucial dimensionless parameter in the master rate equation. What physical requirement does $P$ strictly account for?

Prashant Kotian · Accepted Answer

Correct answer: B. Even if molecules collide with kinetic energy exceeding the threshold barrier, they will bounce off harmlessly if their reactive orbital geometries are not aligned. The steric factor () is the mathematical probability measuring this exact spatial orientation requirement.

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