The Following Questions Refer to the Reaction 2A₂ + B₂ $\to$

Multiple Choice

The following questions refer to the reaction 2A₂ + B₂ $\to$ 2C.The following mechanism has been proposed:
step 1 (very slow)
A₂ + B₂ $\to$ R + C
step 2 (slow)
A₂ + R $\to$ C
-What is the molecularity of step 2?

A) unimolecular
B) bimolecular
C) termolecular
D) quadmolecular
E) molecularity cannot be determined