Oxygen (symbol O) is element number 8 of the periodic table and belongs to the “Nonmetal” category. Its atomic mass is about 15.999, and its phase under standard conditions is Gas. This element sits in period 2 and group 16 of the periodic table, and its electrons are arranged in shells of 2, 6. The short electron configuration of Oxygen is [He] 2s² 2p⁴. Known uses of Oxygen include Respiration, Welding and Water purification.
The electron configuration of Oxygen (O), with 8 electrons, is shown below. The last shell (shell 2) is highlighted:
Distribution of 8 electrons of Oxygen across shells K to L:
The nonmetals are usually poor conductors of heat and electricity and are brittle in solid form; they are the base elements of organic and biological chemistry.
The atomic number of Oxygen (O) is 8; that is, every atom of it has 8 protons.
The electron configuration of Oxygen (O) is 1s² 2s² 2p⁴; in short form it is [He] 2s² 2p⁴, and its last shell is 2s² 2p⁴.
The chemical symbol of Oxygen is O.
Oxygen is located in period 2 and group 16 and belongs to the “Nonmetal” category.
The atomic mass of Oxygen is about 15.999 (atomic mass units).
The phase of Oxygen under standard conditions is Gas.
Uses of Oxygen include Respiration, Welding and Water purification.
Oxygen was discovered by Joseph Priestley in 1774.
Hydrogen (H)Carbon (C)Nitrogen (N)Phosphorus (P)Sulfur (S)Selenium (Se)
Sulfur (S)Selenium (Se)Tellurium (Te)Polonium (Po)Livermorium (Lv)
