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Oxygen is a chemical element with the symbol O and atomic number 8. It is a member of the chalcogen group in the periodic table , a highly reactive nonmetal , and a potent oxidizing agent that readily forms oxides with most elements as well as with other compounds .
Polyatomic ions containing oxygen, such as carbonate and sulfate, are called oxyanions. Molecular ions that contain at least one carbon to hydrogen bond are called organic ions. If the charge in an organic ion is formally centred on a carbon, it is termed a carbocation (if positively charged) or carbanion (if negatively charged).
Dioxygen (O 2), the common allotrope of oxygen; Oxide (O 2−), an ion; Superoxide (O − 2), an ion; Dioxygenyl (O + 2), an ion; Doubly ionized oxygen (O 2+), an ion; O(2), the 2-dimensional orthogonal group in group theory; O2, an EEG electrode site according to the 10–20 system; SGI O2, a Unix workstation computer; O2, a class of O-type star
The phosphite ion, PO 3− 3, is a strong base, and so always carries at least one proton. In this case the proton is attached directly to the phosphorus atom with the structure HPO 2− 3. In forming this ion, the phosphite ion is behaving as a Lewis base and donating a pair of electrons to the Lewis acid, H +. Predominance diagram for chromate
A chemical element is a chemical substance whose atoms all have the same number of protons.The number of protons is called the atomic number of that element. For example, oxygen has an atomic number of 8, meaning each oxygen atom has 8 protons in its nucleus.
The doublet state requires an odd number of electrons, and so cannot occur in dioxygen without gaining or losing electrons, such as in the superoxide ion (O − 2) or the dioxygenyl ion (O + 2). The ground state of O 2 has a bond length of 121 pm and a bond energy of 498 kJ/mol. [ 3 ] It is a colourless gas with a boiling point of −183 °C ...
Notice that oxygen forms three bonds to titanium and titanium forms six bonds to oxygen. An oxide (/ ˈ ɒ k s aɪ d /) is a chemical compound containing at least one oxygen atom and one other element [1] in its chemical formula. "Oxide" itself is the dianion (anion bearing a net charge of –2) of oxygen, an O 2– ion with oxygen in the ...
The diatomic superoxide ion O − 2 has an overall charge of −1, so each of its two equivalent oxygen atoms is assigned an oxidation state of − 1 / 2 . This ion can be described as a resonance hybrid of two Lewis structures, where each oxygen has an oxidation state of 0 in one structure and −1 in the other. For the cyclopentadienyl ...