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1. Protactinium compounds: Protactinium compounds are compounds containing the element protactinium (symbol: Pa). These compounds usually have protactinium in the +5 oxidation state, although these compounds can also exist in the +2, +3 and +4 oxidation states. [100%] 2024-08-26 [Protactinium compounds] [Chemical compounds by element]...

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1. Protactinium: Template:Elementbox header Template:Elementbox series Template:Elementbox periodblock Template:Elementbox appearance Template:Elementbox atomicmass gpm Template:Elementbox econfig Template:Elementbox epershell Template:Elementbox section physicalprop Template:Elementbox phase Template:Elementbox density gpcm3nrt Template:Elementbox meltingpoint Temp. [78%] 2023-04-27 [Actinides] [Chemical elements]...
2. Protactinium: In 1961 the UK Atomic Energy Authority produced 125g of pure protactinium from uranium fuel elements, which represents the major world stock of protactinium. [78%] 2023-03-25 [Metals]
3. Protactinium: Protactinium is a chemical element, having the chemical symbol Pa. Its atomic number (the number of protons) is 91. [78%] 2022-06-11
4. Protactinium: Protactinium (chemical symbol Pa, atomic number 91) is a member of the actinide series of chemical elements. It is a toxic, highly radioactive material, of interest mainly for scientific research. Currently it has no practical applications, but some researchers have ... [78%] 2023-02-04
5. Protactinium: Protactinium (formerly protoactinium) is a radioactive chemical element with the symbol Pa and atomic number 91. It is a dense, silvery-gray actinide metal which readily reacts with oxygen, water vapor and inorganic acids. (Chemistry) [78%] 2023-10-11 [Chemical elements] [Actinides]...
6. Protactinium monoxide: Protactinium monoxide is a radioactive inorganic compound and one of the oxides of protactinium. Its chemical formula is PaO. (Chemistry) [55%] 2023-12-18 [Oxides] [Protactinium compounds]...
7. Protactinium trihydride: Protactinium trihydride is an inorganic compound with the chemical formula PaH3. It is isostructural with uranium trihydride and can be prepared by reacting protactinium and hydrogen at 250 °C and 600 mmHg. (Chemistry) [55%] 2023-10-30 [Protactinium compounds] [Metal hydrides]...
8. Compound: A compound is a molecule which is composed of more than one element. Table salt, for example, is sodium chloride (NaCl), a compound composed of the elements sodium (Na) and chlorine (Cl) in a 1:1 ratio. [55%] 2023-02-18 [Chemistry]
9. Compound: Compound, a combination of various elements, substances or ingredients, so as to form one composite whole. A “chemical compound” is a substance which can be resolved into simple constituents, as opposed to an element which cannot be so resolved (see ... [55%] 2022-09-02
10. Compound: Articles Most recent articles on Compound Most cited articles on Compound Review articles on Compound Articles on Compound in N Eng J Med, Lancet, BMJ Media Powerpoint slides on Compound Images of Compound Photos of Compound Podcasts & MP3s on Compound ... [55%] 2023-11-26
11. Compound (linguistics): This original article is about compounds in linguistics. Its aim is to provide properly sourced information about compounds, in part to support their treatment in dictionaries. (Linguistics) [55%] 2024-01-02 [Linguistics]
12. Compound (linguistics): In linguistics, a compound is a lexeme (less precisely, a word or sign) that consists of more than one stem. Compounding, composition or nominal composition is the process of word formation that creates compound lexemes. (Linguistics) [55%] 2024-01-02 [Syntax] [Word coinage]...
13. Chemical compound#Catalogs#Organic compounds: This page aims to list well-known organic compounds, including organometallic compounds. Note that purely inorganic compounds, minerals, and chemical elements are not included. [52%] 2024-08-23
14. Protactinium(V) chloride: Protactinium(V) chloride is the chemical compound composed of protactinium and chlorine with the formula PaCl5. It forms yellow monoclinic crystals and has a unique structure composed of chains of 7 coordinate, pentagonal bipyramidal, protactinium atoms sharing edges. (Chemistry) [45%] 2023-07-17 [Protactinium compounds] [Chlorides]...
15. Protactinium(IV) oxide: Protactinium(IV) oxide is a chemical compound with the formula PaO2. The black oxide is formed by reducing Pa2O5 with hydrogen at 1 550 °C. (Chemistry) [45%] 2022-08-15 [Oxides] [Protactinium compounds]...
16. Protactinium(V) oxide: Protactinium(V) oxide is a chemical compound with the formula Pa2O5. When it is reduced with hydrogen, it forms PaO2. (Chemistry) [45%] 2022-09-13 [Oxides] [Protactinium compounds]...
17. Protactinium(V) fluoride: Protactinium(V) fluoride is a fluoride of protactinium, with the chemical formula PaF5. Protactinium(V) fluoride can be obtained by reacting protactinium(V) oxide with bromine trifluoride or bromine pentafluoride at 600 °C: It can also be obtained by reacting ... (Chemistry) [45%] 2023-03-21 [Protactinium compounds] [Fluorides]...
18. Protactinium(V) bromide: Protactinium(V) bromide is an inorganic compound. It is a halide of protactinium, consisting of protactinium and bromine. [45%] 2023-08-01 [Bromides] [Actinide halides]...
19. Protactinium(V) iodide: Protactinium(V) iodide is an inorganic compound, with the chemical formula of PaI5. It can be prepared by the reaction of metals protactinium and iodine, or by reacting protactinium(V) chloride, protactinium(V) bromide or protactinium(V) oxide with silicon ... [45%] 2025-05-15 [Protactinium(V) compounds] [Iodides]...