WebPromethium-146 Cite Download Please visit the Promethium element page for information specific to the chemical element of the periodic table. Contents 1 Structures 2 Names and … The element has no biological role. Promethium-147 can emit gamma rays during its beta decay, which are dangerous for all lifeforms. Interactions with tiny quantities of promethium-147 are not hazardous if certain precautions are observed. In general, gloves, footwear covers, safety glasses, and an outer layer of … See more Promethium is a chemical element with the symbol Pm and atomic number 61. All of its isotopes are radioactive; it is extremely rare, with only about 500–600 grams naturally occurring in Earth's crust at any given time. … See more In 1934, Willard Libby reported that he had found weak beta activity in pure neodymium, which was attributed to a half-life over 10 years. Almost 20 years later, it was claimed … See more The production methods for different isotopes vary, and only those for promethium-147 are given because it is the only isotope with … See more • Emsley, John (2011). Nature's Building Blocks: An A-Z Guide to the Elements. Oxford University Press. pp. 428–430. ISBN 978-0-19-960563-7. • Lavrukhina, Avgusta Konstantinovna; Pozdnyakov, Aleksandr Aleksandrovich (1966). Аналитическая … See more Physical properties A promethium atom has 61 electrons, arranged in the configuration [Xe] 4f 6s . The seven 4f and 6s electrons are valence. In forming … See more Searches for element 61 In 1902, Czech chemist Bohuslav Brauner found out that the differences in properties between neodymium and samarium were the largest between any two consecutive lanthanides in the sequence then … See more Most promethium is used only for research purposes, except for promethium-147, which can be found outside laboratories. It is obtained as the oxide or chloride, in milligram quantities. This isotope does not emit gamma rays, and its radiation has … See more
Isotope data for promethium-147 in the Periodic Table
WebApr 11, 2024 · Promethium $\text { (Pm) }$ is the only lanthanide that exhibits radioactivity. It is one of the two elements among the first 83 elements. It does not have a stable or long-lived isotope. The promethium isotope (promethium-146) is unstable. The primary decay product of promethium is neodymium $\text { (Nd) }$ and samarium$\text { (Sm) }$. WebPromethium-147 is a radioactive isotope of the element promethium. The atomic nucleus of the nuclide has 86 neutrons in addition to the 61 element-specific protons. The isotope is … iowa high school football rpi rankings
Why is technetium unstable? - Physics Stack Exchange
WebGet to learn about promethium-146. The overall knowledge and encyclopedia of promethium-146 covering characteristics, safety, usage, MSDS/SDS and more. WebPromethium is one of only two radioactive elements that are followed in the periodic table by elements with stable forms, the other being technetium. Chemically, promethium is a lanthanide. Promethium shows only one stable oxidation state of +3. The element’s atomic radius is the second largest among all the lanthanides but is only slightly ... WebPromethium's most stable isotope, promethium-145, has a half-life of 17.7 years. It decays into neodymium-145 through electron capture. Promethium could be used to make a … iowa high school football schedule playoffs