High electronegativity of oxygen to the group 6A element. He indicated with the letter of oxygen has 8 protons 8 neutrons. Oxygen is the most abundant on earth elemen. Approximately 50% by mass of the earth is formed sabic by oxygen compounds. Also 89% of the mass of water, still 23% of the mass of air oxygen. The first time it was discovered by Joseph Priestley. Oxygen is obtained or by heating mercury oxide, mercury, zinc oxide is heated with oxygen occurs. This occurs above 400 deg. Elements sabic that make it up again and thereby decomposed to oxygen is removed. Try this for the first time, Priestley and Lavoisier made. A plurality of metal oxides obtained in this manner have oxygen by decomposing by the heat. Of Potassium Chlorate (FSFI 3) from the decomposition Potassium chlorate is heated above 370C of, data is decomposed and oxygen. From electrolysis of water: water in the electrical current would pass through the transport sabic of ions. Chemical equation is as follows Liquid Air: Air, wherein the gas after cooling to below the critical temperature, pressure, if done on deliquescent. Liquid air, before boiling point -195.7 deg nitrogen evaporated. Then the boiling point of oxygen is evaporated -181.5 deg. Thus, oxygen, nitrogen would have ayırttırıl. Dry Air: barium oxide (BaO), the air is heated to red-degree taking the oxygen in the air creates barium peroxide. Barium oxide oxygen taken by this equation leaves again. Accordingly, barium unchanged oxygen content of oxygen is obtained continuously. PHYSICAL AND CHEMICAL PROPERTIES OF OXYGEN Oxygen (O2) is a colorless, odorless and tasteless gas. Liquid oxygen is a light blue color. Drinking water is in contact with air includes an amount of dissolved oxygen. O2 solubility of oxygen is 30 ml of 1 liter of water. The ability sabic to enter the chemical reaction of oxygen is moderate. Oxygen, with all the elements known compounds, sabic excluding inert gases do. Oxygen has oxidation number of -2 in compounds. Only with fluorine compounds where is + and + valence. In the compounds of oxygen, single, double and triple bonds do. An example of the oxidation of oxygen Oxygen events as main group elements per 6A element. all of the elements in this queue is ametald. The sulfur is weak electronegative oxygen immediately after. Oxygen after Flor, the second highest electronegative element. Due to the high electronegativity of oxygen hydrogen bonds in the compounds is observed. sabic Oxygen slightly soluble in water. (100 lt. 4.89 liters of water at ordinary temperature of 0 C (20 C) soluble at 3.4 liters.) Under normal circumstances, a volume ratio of the weight in grams per liter, so the density d = 1.429 g / liter. The freezing point of oxygen: -218.8 sabic deg.
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