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Lanthanum is the strongest and hardest base among the rare earth elements, which is again expected from its being the largest of them. [34] Some lanthanum(II) compounds are also known, but they are much less stable. [17] Therefore, in officially naming compounds of lanthanum its oxidation number always is to be mentioned.
Lanthanum(III) oxide, also known as lanthana, chemical formula La 2 O 3, is an inorganic compound containing the rare earth element lanthanum and oxygen. It is used in some ferroelectric materials, as a component of optical materials, and is a feedstock for certain catalysts, among other uses.
The oxidation states are also maintained in articles of the elements (of course), and systematically in the table {{Infobox element/symbol-to-oxidation-state}} See also [ edit ]
Lanthanum manganite is an inorganic compound with the formula LaMnO 3, often abbreviated as LMO. Lanthanum manganite is formed in the perovskite structure, consisting of oxygen octahedra with a central Mn atom. The cubic perovskite structure is distorted into an orthorhombic structure by a strong Jahn–Teller distortion of the oxygen octahedra ...
Lanthanum, 57 La; Lanthanum ... oxidation-state/comment: parenthesized: brackets: brackets Note, what is shown in the infobox is not influenced by the parameter name ...
This change in the unit cell is explained on the basis of the Goldschmidt tolerance factor for perovskites. The change in the oxidation state of the Mn cation in LSMO can be readily observed through the position of the XPS peak for the Mn 2p 3/2 orbital, and the interesting ferromagnetic ordering obtained when x=0.5 and 0.7 in the La 1−x Sr x ...
The chemistry of the lanthanides is dominated by the +3 oxidation state, and in Ln III compounds the 6s electrons and (usually) one 4f electron are lost and the ions have the configuration [Xe]4f (n−1). [23] All the lanthanide elements exhibit the oxidation state +3.
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.