11. Bimolecular electron transfer always produces a reactive chemical species, free radicals. 12. Photoinitators can create reactive species by different pathways including photodissociation and electron transfer . 13. The mitochondrially-encoded subunits perform the electron transfer of proton pumping activities. 14. Therefore, the complex does not undergo much reorganization during electron transfer . 15. Indeed, electron transfer forms an example of the " Psuedo " conical intersections. 16. Because it is hot, the electrons transfer their thermal energy to the photons. 17. Thus, the electron transfer in ARHD systems can be summarised as: 18. Contributions to the theory of electron transfer reactions in chemical systems. 19. In inorganic chemistry, most charge-transfer complexes involve electron transfer between metal atoms and ligands. 20. Electron transfer occurs through the bridge once it is established.