Why cannot oxidation occur without reduction.

Hint: We have to know that the oxidation alludes to the deficiency of electrons or expansion in oxidation state by a particle, molecule, or particle. Decrease alludes to the increase of electrons or reduction in oxidation state by a particle, atom, or particle.

Complete answer:
Immediately they can be discrete however, in the end they get together. A typical model is lightning contact structures particles and some are brought about by electrons taken from atoms. It might require a few seconds for everything to get together and atoms to frame and everything to settle down. Oxidation and reduction, including the move of electrons, electrons are matter. In synthetic reactions matter is conserved. Yes it truly is mass-energy. So if there is a charge division from the move of electrons the plus and minus charges attract in one another whether completely created particles or species that can acknowledge a charge at a lower energy like a chlorine atom. Thermodynamics or energy and entropy contrasts attempt to clarify what will happen "in the end" while energy and reaction components study responses to perceive how they occur. Recollecting atoms and so on are particles and are dependent upon actual requirements even regardless of quantum impacts so reactions require significant investment going from peta seconds to ages.
We have to see that the reduction is the point at which the species acquires electrons. Consequently, oxidation can't happen without a decrease since when a species loses electrons that electron should be acquired by the following species in the reaction.

Note:
We have to know that, oxidation is a response that eliminates an electron from a substance, decrease is a response that adds electrons to a substance. Reduction is a reaction that eliminates an electron from a substance, oxidation is a response that adds electrons to a substance.