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An oxide (/ ˈɒksaɪd /) 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 oxidation state of −2. Most of the Earth's crust consists of oxides.
Oxidation state. In chemistry, the oxidation state, or oxidation number, is the hypothetical charge of an atom if all of its bonds to other atoms were fully ionic. It describes the degree of oxidation (loss of electrons) of an atom in a chemical compound. Conceptually, the oxidation state may be positive, negative or zero.
An oxyanion, or oxoanion, is an ion with the generic formula AxOz−y (where A represents a chemical element and O represents an oxygen atom). Oxyanions are formed by a large majority of the chemical elements. [ 1 ] The formulae of simple oxyanions are determined by the octet rule. The corresponding oxyacid of an oxyanion is the compound HzAxOy ...
Lithium oxide (Li. 2 O) or lithia is an inorganic chemical compound. It is a white solid. Although not specifically important, many materials are assessed on the basis of their Li 2 O content. For example, the Li 2 O content of the principal lithium mineral spodumene (LiAlSi 2 O 6) is 8.03%. [2]
The conductivity in the β, γ and δ-phases is predominantly ionic with oxide ions being the main charge carrier. Of these δ- Bi 2 O 3 has the highest reported conductivity. At 750 °C the conductivity of δ- Bi 2 O 3 is typically about 1 S cm −1 , about three orders of magnitude greater than the intermediate phases and four orders greater ...
An ion (/ ˈaɪ.ɒn, - ən /) [ 1 ] is an atom or molecule with a net electrical charge. The charge of an electron is considered to be negative by convention and this charge is equal and opposite to the charge of a proton, which is considered to be positive by convention. The net charge of an ion is not zero because its total number of ...
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references. Silver oxide is the chemical compound with the formula Ag 2 O. It is a fine black or dark brown powder that is used to prepare other silver compounds.
The hydroxide ion is intermediate in nucleophilicity between the fluoride ion F −, and the amide ion NH − 2. [51] Ester hydrolysis under alkaline conditions (also known as base hydrolysis) R 1 C(O)OR 2 + OH − ⇌ R 1 CO(O)H + − OR 2 ⇌ R 1 CO 2 − + HOR 2. is an example of a hydroxide ion serving as a nucleophile. [52]