can you name some prokaryotes in which this etc can be seen?
E.coli
Oxidative phosphorylation
he main difference between eukaryotic and prokaryotic oxidative phosphorylation is that bacteria and archaea use many different substances to donate or accept electrons. This allows prokaryotes to grow under a wide variety of environmental conditions. In "E. coli", for example, oxidative phosphorylation can be driven by a large number of pairs of reducing agents and oxidizing agents, which are listed below. The midpoint potential of a chemical measures how much energy is released when it is oxidized or reduced, with reducing agents having negative potentials and oxidizing agents positive potentials.

is the electron transport chain part of oxidative phosphorylation Yes. It is the metabolic pathway in which cells use enzymes to oxidize nutrients, thereby releasing the chemical energy stored within in order to produce adenosine triphosphate (ATP) how is it related to chemiosmosis? When  the electron transport chain and the ATP synthase are embedded in a membrane, and energy is transferred from the electron transport chain to the ATP synthase by movements of protons across this membrane, in a process called "chemiosmosis in eukaryotes, where this process or pathway takes place? Inner membrane of the mitochondrion what is the first complex produce in this electron transport chain? NADH-coenzyme Q oxidoreductase what is this complex? It is the first protein in the electron transport chain.
wiki:25676184
Oxidative phosphorylation [SEP] Prokaryotic electron transport chains
This allows prokaryotes to grow under a wide variety of environmental conditions. In "E. coli", for example, oxidative phosphorylation can be driven by a large number of pairs of reducing agents and oxidizing agents, which are listed below. The midpoint potential of a chemical measures how much energy is released when it is oxidized or reduced, with reducing agents having negative potentials and oxidizing agents positive potentials. As shown above, "E. coli" can grow with reducing agents such as formate, hydrogen, or lactate as electron donors, and nitrate, DMSO, or oxygen as acceptors. The larger the difference in midpoint potential between an oxidizing and reducing agent, the more energy is released when they react.