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it sustains all living creatures without it animals would not survive.

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6. Areas where oxygen is produced or found: 

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6. Areas where oxygen is produced or found: 

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it is found everywhere in the universe; it  is ubiquitous. It comprises approximately 46% of the crust, 21% of the atmosphere, and 61% of the human body. Because of oxygen's high reactivity, it is most often found in compounds.

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Oxygen's high reactivity is due to its biradical electron configuration. As shown in a molecular orbital drawing of O₂, the two unpaired electrons make the molecule highly susceptible to bond formation.
Oxygen has two allotropes (dioxygen, O₂, and ozone, O₃), both excellent oxidizing agents . Oxygen is typically observed observed in the -2 oxidation state, in the form O²⁻, but it can also form other ions such as peroxide, O₂ ²⁻, and superoxide, O₂⁻. With different possible oxidation states, many possible molecular compounds can be formed when an element reacts with oxygen. Many reactions involving oxygen occur in biological processes, including cellular respiration and photosynthesis.

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The properties of Oxygen:
At standard temperature and pressure two atoms of the element combine  to form diaoxygen. It is a colourless element.
Melting point | 54.36 K ​(−218.79 °C, ​−361.82 °F)
Boiling point | 90.188 K ​(−182.962 °C, ​−297.332 °F)
Density at stp (0 °C and 101.325 kPa) | 1.429 g/L

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There is a historic dispute about who discovered oxygen.
Itwas discovered for the first time by a Swedish Chemist, Carl Wilhelm Scheele, in 1772. Joseph Priestly, an English chemist, independently, discovered oxygen in 1774 and published his findings the same year, three years before Scheele published. Antoine Lavoisier, a French chemist, also discovered oxygen in 1775, was the first to recognize it as an element, and coined its name "oxygen" - which comes from a Greek word that means “acid-former”.

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oxygen picture:
https://www.spreadshirt.com.au/chemistry+oxygen+t-shirts?redirectFrom=us_US&token=chemistry+oxygen+t-shirts
diagram: https://www.dreamstime.com/stock-illustration-diagram-representation-element-oxygen-illustration-image59012825
question https://chem.libretexts.org/Core/Inorganic_Chemistry/Descriptive_Chemistry/Main_Group_Reactions/Reactions_of_Main_Group_Elements_with_Oxygen

http://www.juliantrubin.com/bigten/oxygenexperiments.html

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Diagram of the element oxygen

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there are 8 protons, 8 neutrons and 8 electrons.