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The γ polymorph of cerium(III) sulfide adopts a cation-deficient form of the Th 3 P 4 structure. 8 out the 9 metal positions in the Th 3 P 4 structure are occupied by cerium in γ-Ce 2 S 3, with the remainder as vacancies. This composition can be represented by the formula Ce 2.667 0.333 S 4.
Cerium sulfide forms yellow crystalline solid of cubic syngony crystals, space group Fm3m, cell parameter a = 0.5780 nm, Z = 4, of NaCl-type structure. [citation needed] The compound melts congruently at a temperature of 2450 °C.
Cerium sulfide may refer to: Cerium monosulfide, CeS; Cerium(III) sulfide, Ce 2 S 3 This page was last edited on 21 January 2024, at 18:17 (UTC). Text is ...
Cerium(IV) oxide ("ceria") has the fluorite structure, similarly to the dioxides of praseodymium and terbium. Ceria is a nonstoichiometric compound, meaning that the real formula is CeO 2−x, where x is about 0.2. Thus, the material is not perfectly described as Ce(IV). Ceria reduces to cerium(III) oxide with hydrogen gas. [3]
Cerium(IV) sulfate, also called ceric sulfate, is an inorganic compound. It exists as the anhydrous salt Ce(SO 4) 2 as well as a few hydrated forms: Ce(SO 4) 2 (H 2 O) x, with x equal to 4, 8, or 12. These salts are yellow to yellow/orange solids that are moderately soluble in water and dilute acids.
Chemical formula Synonyms CAS number C 10 H 16 N 2 O 8: Ethylenediaminetetraacetic acid (EDTA): 6381–92–6 C 12 H 22 O 11: sucrose: 57–50–1 C 18 H 29 O 3 S: sodium dodecyl benzenesulfonate: 2155–30–0
Cerium(III) sulfate, also called cerous sulfate, is an inorganic compound with the formula Ce 2 (SO 4) 3. It is one of the few salts whose solubility in water decreases with rising temperature. [1] Cerium(III) sulfate is a hygroscopic white solid, which begins to decompose above 600°C.
Cerium is a chemical element; it has symbol Ce and atomic number 58. It is a soft , ductile , and silvery-white metal that tarnishes when exposed to air. Cerium is the second element in the lanthanide series, and while it often shows the oxidation state of +3 characteristic of the series, it also has a stable +4 state that does not oxidize water.