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Actinium(III) Phosphate
Actinium(III) phosphate is a white-colored chemical compound of the radioactive element actinium. This compound was created by reacting actinium(III) chloride with monosodium phosphate in aqueous hydrochloric acid. This resulted in the hemihydrate AcPO4·1/2H2O, whose structure was confirmed by x-ray diffraction to match that of lanthanum phosphate. To become anhydrous, it was heated to 700 °C, which resulted in a solid that was black (presumably due to the presence of impurities), and whose specific X-ray structure did not match that of other known correspond to other actinide The actinide () or actinoid () series encompasses at least the 14 metallic chemical elements in the 5f series, with atomic numbers from 89 to 102, actinium through nobelium. Number 103, lawrencium, is also generally included despite being part ... phosphates. References {{inorganic-stub Actinium compounds Phosphates ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Actinium
Actinium is a chemical element; it has chemical symbol, symbol Ac and atomic number 89. It was discovered 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 and lawrencium in the periodic table, are named for actinium. Together with polonium, radium, and radon, actinium was one of the first Primordial element, non-primordial radioactive elements to be discovered. A soft, silvery-white radioactive metal, actinium reacts rapidly with oxygen and moisture in air forming a white coating of actinium oxide that prevents further oxidation. As with most lanthanides and many actinides, actinium assumes oxidation state +3 in nearly all its chemical compounds. Actinium is found only in traces in uranium and thorium ores as the isotope 227Ac, which decays with a half-life of 21.772 years, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Actinium(III) Chloride
Actinium(III) chloride is a chemical compound containing the rare radioactive element actinium. This salt has the formula AcCl3. Molecular weight of the compound is 333.378 g/mol. Synthesis Actinium(III) chloride is made by reacting actinium hydroxide with carbon tetrachloride Carbon tetrachloride, also known by many other names (such as carbon tet for short and tetrachloromethane, also IUPAC nomenclature of inorganic chemistry, recognised by the IUPAC), is a chemical compound with the chemical formula CCl4. It is a n .... :4 Ac(OH)3 + 3 CCl4 → 4AcCl3 + 3CO2 + 6H2O References {{inorganic-stub Actinium compounds Chlorides Actinide halides ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monosodium Phosphate
Monosodium phosphate (MSP), also known as monobasic sodium phosphate and sodium dihydrogen phosphate, is an inorganic compound with the chemical formula . It is a sodium Salt (chemistry), salt of phosphoric acid. It consists of sodium cations () and dihydrogen phosphate anions (). One of many sodium phosphates, it is a common chemical industry, industrial chemical. The salt exists in an anhydrous form, as well as hydrate, monohydrate and dihydrate ( and respectively). Production and reactions The salt is obtained by partial neutralization of phosphoric acid. The pKa, p''K''a of monosodium phosphate is 6.8-7.2 (depending on the Physical chemistry, physicochemical characteristics during p''K''a determination). Heating this salt above 169 °C gives disodium pyrophosphate: : When heated at 550 °C, anhydrous trisodium trimetaphosphate is formed: : Uses Phosphates are often used in foods and in water treatment. The pH of such formulations is adjusted by mixtures of vari ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Actinide
The actinide () or actinoid () series encompasses at least the 14 metallic chemical elements in the 5f series, with atomic numbers from 89 to 102, actinium through nobelium. Number 103, lawrencium, is also generally included despite being part of the 6d transition series. The actinide series derives its name from the first element in the series, actinium. The informal chemical symbol An is used in general discussions of actinide chemistry to refer to any actinide. The 1985 IUPAC nomenclature of inorganic chemistry, IUPAC ''Red Book'' recommends that ''actinoid'' be used rather than ''actinide'', since the suffix ''-ide'' normally indicates a negative ion. However, owing to widespread current use, ''actinide'' is still allowed. Actinium through nobelium are f-block elements, while lawrencium is a d-block element and a transition metal. The series mostly corresponds to the filling of the 5f electron shell, although as isolated atoms in the ground state many have anomalous configu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Actinium Compounds
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: Actinium fluoride, AcF3, Actinium(III) chloride, AcCl3, Actinium(III) bromide, AcBr3, AcOF, AcOCl, AcOBr, Actinium(III) sulfide, Ac2S3, Actinium oxide, Ac2O3, Actinium(III) phosphate, AcPO4 and Actinium(III) nitrate, Ac(NO3)3. Except for AcPO4, they are all similar to the corresponding lanthanum compounds. They all contain actinium in the oxidation state +3.Actinium Great Soviet Encyclopedia (in Russian) In particular, the lattice constants of the analogous lanthanum and actinium compounds differ by only a few percent. Properties of actinium compounds Here ''a'', ''b'' and ''c'' are lattice constants, No is ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
