Question

Based on the collision model, the atoms at the top of the potential energy hill are called ___________

(a) Transition state

(b) Energetic atom

(c) Steric factor

(d) Activation energy

I had been asked this question in examination.

I want to ask this question from Pseudo Order Reaction topic in chapter Reaction Dynamics of Engineering Chemistry I

Answer 1

Correct option is (a) Transition state

To explain: Based on the collision model, the atoms at the top of the potential energy hill are called transition state. The transition state is the state corresponding to the highest energy along the reaction coordinate. It has more free energy in comparison to the substrate or product; thus, it is the least stable state.