Is that possible to have a zero activation energy in a reaction? Explain why?

Activation energy is the minimum amount of energy required to activate the atoms or molecules or it is the difference between threshold energy from the potential energy of a reactant

The activation energy can never be zero fora reaction why because according to arrhenius equation

K = Ae^-Ea/RT

Ea is the activation energy if it is O THEN,

K = A, which would occur effective collisions between the molecule which is not ever possible.

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