Answer:
It is not a redox reaction.
Step-by-step explanation:
A redox reaction is a type of reaction in which there is a transfer of electrons between species. The species that gains electrons are the oxidant agent since it will be reduced when it takes the electron of the other species, and vice versa, the specie that loses electrons will be the reductant agent since it will be oxidated when it loses its electron.
Hence in a redox reaction will occur an electron transfer with the following change in the oxidation number between the reactants and the products.
Therefore, If there are no changes in the oxidation state of the reactants or products of a particular reaction, it means that the reaction is not a redox reaction.
I hope it helps you!