 | Protactinium is a chemical element; it has symbol Pa and atomic number 91. It is a dense, radioactive, silvery-gray actinide metal which readily reacts... 50 KB (5,785 words) - 06:21, 11 April 2024 |
Protactinium (91Pa) has no stable isotopes. The four naturally occurring isotopes allow a standard atomic weight to be given. Twenty-nine radioisotopes... 16 KB (1,541 words) - 15:04, 17 October 2023 |
Protactinium monoxide is a radioactive inorganic compound and one of the oxides of protactinium. Its chemical formula is PaO. It is a black solid that... 2 KB (164 words) - 22:53, 24 June 2023 |
Protactinium bromide may refer to: Protactinium(IV) bromide (protactinium tetrabromide), PaBr4 Protactinium(V) bromide (protactinium pentabromide), PaBr5... 511 bytes (51 words) - 23:01, 20 December 2023 |
of protactinium. 233Pa has convenient half-life and energy of γ-radiation, and thus was used in most studies of protactinium chemistry. Protactinium-233... 130 KB (11,594 words) - 05:53, 24 March 2024 |
 | Protactinium trihydride is an inorganic compound with the chemical formula PaH3. It is isostructural with uranium trihydride and can be prepared by reacting... 2 KB (189 words) - 18:13, 6 April 2024 |
Protactinium tetraiodide is a binary inorganic compound of protactinium metal and iodine with the chemical formula PaI4. Protactinium tetraiodide can... 4 KB (241 words) - 02:26, 27 April 2024 |
 | Protactinium tetrafluoride is a binary inorganic compound of protactinium metal and fluorine with the chemical formula PaF4. Protactinium tetrafluoride... 4 KB (241 words) - 08:54, 2 April 2024 |
Protactinium oxide may refer to: Protactinium(II) oxide [Wikidata], PaO Protactinium(IV) oxide, PaO2 Protactinium(V) oxide, Pa2O5 Protactinium#Chemical... 266 bytes (55 words) - 01:02, 15 November 2021 |
Protactinium nitride is a binary inorganic compound of protactinium and nitrogen with the chemical formula PaN. The compound can be obtained from the... 4 KB (299 words) - 04:14, 12 February 2024 |
 | Discovery of nuclear fission (section Protactinium) found was an isotope of protactinium. This spurred Hahn and Meitner, the discoverers of the most stable isotope of protactinium, to conduct a four-year-long... 98 KB (12,318 words) - 13:21, 5 March 2024 |
half-life of only 22 minutes. Thorium-233 decays into protactinium-233 through beta decay. Protactinium-233 has a half-life of 27 days and beta decays into... 21 KB (2,039 words) - 19:31, 21 April 2024 |
 | physicist who was one of those responsible for the discovery of the element protactinium and nuclear fission. While working on radioactivity at the Kaiser Wilhelm... 100 KB (12,725 words) - 15:55, 21 March 2024 |
 | Crookes isolated protactinium (91) as a radioactive material deriving from uranium that he could not identify. Different isotopes of protactinium were identified... 15 KB (1,587 words) - 17:40, 4 January 2024 |
Protactinium(V) oxide is a chemical compound with the formula Pa2O5. When it is reduced with hydrogen, it forms PaO2. Aristid V. Grosse was first to prepare... 3 KB (202 words) - 12:42, 5 January 2024 |
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. Protactinium(IV)... 3 KB (188 words) - 00:59, 23 September 2023 |
 | with a short half-life, 234Th nuclei emit a beta particle to become protactinium-234 (234Pa), or more likely a nuclear isomer denoted 234mPa. Finally... 6 KB (675 words) - 13:13, 24 January 2024 |
 | Otto Hahn (section Discovery of protactinium) and Lise Meitner discovered radioactive isotopes of radium, thorium, protactinium and uranium. He also discovered the phenomena of atomic recoil and nuclear... 114 KB (14,357 words) - 13:16, 8 April 2024 |
 | Actinides in the environment (section Protactinium) name Thorotrast. Protactinium-231 occurs naturally in uranium ores such as pitchblende, to the extent of 3 ppm in some ores. Protactinium is naturally present... 15 KB (1,877 words) - 06:22, 5 October 2023 |
 | Protactinium(V) chloride is the chemical compound composed of protactinium and chlorine with the formula PaCl5. It forms yellow monoclinic crystals and... 4 KB (175 words) - 12:41, 5 January 2024 |
 | thorium-234 and protactinium-234, are beta particle emitters with half-lives of about 20 days and one minute respectively. Protactinium-234 decays to uranium-234... 22 KB (2,809 words) - 12:00, 1 April 2024 |
(solitaire) Ninety One plc, an Anglo-South African asset management business Protactinium, atomic number 91 91 Aegina, a main-belt asteroid All pages with titles... 658 bytes (116 words) - 14:11, 5 April 2024 |
 | thorium salt absorbs neutrons and slowly converts its thorium to protactinium-233. Protactinium-233 can be left in the blanket region where neutron flux is... 113 KB (14,151 words) - 15:42, 15 April 2024 |
 | Protactinium(V) fluoride is a fluoride of protactinium with the chemical formula PaF5. Protactinium(V) fluoride can be obtained by reacting protactinium(V)... 4 KB (372 words) - 12:42, 5 January 2024 |
 | Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium... 98 KB (10,929 words) - 05:59, 16 April 2024 |
 | Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium... 135 KB (14,477 words) - 16:54, 27 April 2024 |
 | Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium... 94 KB (11,249 words) - 22:16, 10 April 2024 |
Extended periodic table (redirect from Eka-protactinium) Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium... 148 KB (15,104 words) - 12:51, 19 April 2024 |
 | Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium... 173 KB (18,915 words) - 02:19, 28 April 2024 |
 | Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium... 90 KB (9,845 words) - 10:10, 24 April 2024 |