Photolytic oxygen evolution happens during the thylakoid membranes of photosynthetic organisms and requires the Vitality of 4 photons. Priestley, even so, known as oxygen "dephlogisticated air", and did not realize it being a chemical element. The title oxygen was coined in 1777 by Antoine Lavoisier, who very first recognized oxygen https://lorenzoiqygo.articlesblogger.com/58349316/the-best-side-of-oxygen-treatment-cost