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Moderate

Probability and Collisions in Elementary Reactions Fastest Step

APCHEM-WUXM1Z

Which of the following elementary reaction mechanism steps is LEAST likely to be rate determining in a mechanism?

A

$D\longrightarrow E+F$

B

$R+S\longrightarrow T$

C

$B+C+D\longrightarrow E+F$

D

$X+Y\longrightarrow Z$