Oxygen in gaseous form is colorless, odorless and tasteless.ġ9. Ozone is helpful in preventing the unwanted rays from the sun from entering the earth’s atmosphere.ġ8. Three atoms of Oxygen combine and make a molecule of Ozone (an allotrope of oxygen). Earth is the only planet in the solar system that has enough oxygen for the living beings to survive.ġ7. Except for helium and neon, oxygen can form compounds with every other element. Oxygen is paramagnetic (according to – a body or substance that, placed in a magnetic field, possesses magnetization in direct proportion to the field strength a substance in which the magnetic moments of the atoms are not aligned. And when it is 0.5 mg/l, it is called anoxic. When the dissolved oxygen in water is below 3mg/l, the water is called hypoxic. Seawater, on the other hand, contains only 4.95 ml of oxygen per liter. Under normal conditions, freshwater contains 6.04 ml of oxygen per liter. Oxygen supports the burning of other substance however pure oxygen itself does not burn. Leonardo da Vinci also confirmed the existence of some other constituent in the air when he realized that a fraction of air is consumed in combustion and respiration. Some other group 16 elements include sulfur, selenium, tellurium, and polonium.ġ0. Oxygen belongs to the Chalcogen family (group 16 of the periodic table). Oxygen in the human body is present in fats, carbohydrates, and DNA. Oxygen content in the rocks is in the form of silicon dioxide, which is commonly known as sand. Rocks on earth are about 46% oxygen by weight. Interestingly, a molecule of oxygen can withstand the pressure which is nineteen million times higher than the atmospheric pressure. The name of the element was given by the French scientist, Antoine Lavoisier. The element derives its name from the Greek “oxy” meaning acid and “genes” meaning forming. The first oxygen on earth is estimated to have been contributed by Cyanobacteria that consume carbon dioxide and exhale oxygen.

Non-metals are located in groups 14, 15 and 16 of the Periodic Table. In fact, it is the most non-reactive of the non-metallic elements. Almost 90% of the Earth’s crust is made up of these five elements: aluminum, silicon, calcium, iron, and oxygen. Oxygen makes up nearly 21% of the earth’s atmosphere, two-thirds of the mass of the human body, and nearly half of the mass of the earth’s crust. However, Carl Wilhelm Scheele (he called it “fire air”) discovered the element two years earlier, but the credit for the discovery of the element is often given to Joseph Priestley (maybe because Wilhelm did not publish his findings prior to Joseph’s). Oxygen was discovered in 1774 by Joseph Priestley in England. With these facts about oxygen, let us understand more in detail about this life supporting element which is useful in many fundamental ways to millions of living species on the planet earth.ġ. In gaseous appearance, it is colorless and in the liquid and solid state, it is pale blue in color. Oxygen is atomic number 8 and atomic weight 15.999. There you can find the metals, semi-conductor(s), non-metal(s), inert noble gas(ses), Halogens, Lanthanoides, Actinoids (rare earth elements) and transition metals.Oxygen (after hydrogen and helium) is the third most abundant element in the universe. Please note that the elements do not show their natural relation towards each other as in the Periodic system. The first chemical element is Hydrogen and the last is Ununoctium. The chemical elements ofįor chemistry students and teachers: The tabular chart on the right is arranged by Atomic number. This list contains the 118 elements of chemistry.

Plant Inspection & Process OptimalisationĬhemical elements listed by atomic number The elemenents of the periodic table sorted by atomic numberĬlick on any element's name for further chemical properties, environmental data or health effects.

Oxygen atomic number