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Actinium is a chemical element; it has symbol Ac and atomic number 89. It was first isolated by Friedrich Oskar Giesel in 1902, who gave it the name emanium; the element got its name by being wrongly identified with a substance André-Louis Debierne found in 1899 and called actinium. The actinide series, a set of 15 elements between actinium ...
Actinium (III) oxide is a chemical compound containing the rare radioactive element actinium. It has the formula Ac 2 O 3. It is similar to its corresponding lanthanum compound, lanthanum (III) oxide, and contains actinium in the oxidation state +3. [2][3] Actinium oxide is not to be confused with Ac 2 O (acetic anhydride), where Ac is an ...
See also: oxidation states in {{infobox element}} [ edit ] The oxidation states are also maintained in articles of the elements (of course), and systematically in the table {{ Infobox element/symbol-to-oxidation-state }} (An overview is here ).
Actinide chemistry. Plutonium is a transuranic radioactive chemical element, an actinide metal. Actinide chemistry (or actinoid chemistry) is one of the main branches of nuclear chemistry that investigates the processes and molecular systems of the actinides. The actinides derive their name from the group 3 element actinium.
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. Beside nearly-pure ionic bonding, many ...
See also: oxidation states in {{infobox element}} [ edit ] The oxidation states are also maintained in articles of the elements (of course), and systematically in the table {{ Infobox element/symbol-to-oxidation-state }} (An overview is here ).
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Actinium compounds are compounds containing the element actinium (Ac). Due to actinium's intense radioactivity, only a limited number of actinium compounds are known. These include: AcF 3, AcCl 3, AcBr 3, AcOF, AcOCl, AcOBr, Ac 2 S 3, Ac 2 O 3, AcPO 4 and Ac (NO 3) 3. Except for AcPO 4, they are all similar to the corresponding lanthanum compounds.
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