Promethium by Carson Regester https://padlet.com/cregester27/lel3um7otcg7nf4n en-us 2023-02-15 16:05:53 UTC 2025-12-23 09:07:35 UTC hello@padlet.com History cregester27 https://padlet.com/cregester27/lel3um7otcg7nf4n/wish/2483717730 It was discovered in 1945. It was found by Jacob A. Marinsky, Lawrence E. Glendenin, and Charles D. Coryell. It was discovered in Clinton Laboratories in Tennessee, United States.]]> 2023-02-15 16:16:08 UTC https://padlet.com/cregester27/lel3um7otcg7nf4n/wish/2483717730 Physical Properties cregester27 https://padlet.com/cregester27/lel3um7otcg7nf4n/wish/2485223364 At room temperature, promethium is a solid. It freezes at 1,907F, or colder. Anything hotter will turn it into a liquid. When it reaches 5,432F, it will evaporate. It is a metal with an atomic mass of 145 u and its density is 6.475 g.cm-3.]]> 2023-02-16 16:20:45 UTC https://padlet.com/cregester27/lel3um7otcg7nf4n/wish/2485223364 Chemical Properties cregester27 https://padlet.com/cregester27/lel3um7otcg7nf4n/wish/2486649423 Promethium has not been tested to see if it flammable due to how rare it is. But other metals of the same type are very flammable in powder form. Promethium is a reactive element. It is known to react with the oxygen in the air, with water, and with both strong and weak acids.]]> 2023-02-17 18:21:43 UTC https://padlet.com/cregester27/lel3um7otcg7nf4n/wish/2486649423 Periodic Table cregester27 https://padlet.com/cregester27/lel3um7otcg7nf4n/wish/2490193201 2023-02-21 19:33:07 UTC https://padlet.com/cregester27/lel3um7otcg7nf4n/wish/2490193201 Atom Structure cregester27 https://padlet.com/cregester27/lel3um7otcg7nf4n/wish/2490201325 Promethium has 61 protons, 61 electrons, 7 valance electrons and its isotope range is from 126-166. ]]> 2023-02-21 19:40:38 UTC https://padlet.com/cregester27/lel3um7otcg7nf4n/wish/2490201325 Safety cregester27 https://padlet.com/cregester27/lel3um7otcg7nf4n/wish/2490208723 If swallowed, promethium-147 passes through the digestive tract without being absorbed into the walls. Promethium is radioactive]]> 2023-02-21 19:47:51 UTC https://padlet.com/cregester27/lel3um7otcg7nf4n/wish/2490208723 Source cregester27 https://padlet.com/cregester27/lel3um7otcg7nf4n/wish/2490225747 Promethium is man made and has no natural roles.Promethium can be produced by irradiating neodymium and praseodymium with neutrons. ]]> 2023-02-21 20:04:37 UTC https://padlet.com/cregester27/lel3um7otcg7nf4n/wish/2490225747 Uses cregester27 https://padlet.com/cregester27/lel3um7otcg7nf4n/wish/2490241012 Small amounts of promethium are found in radios, atomic batteries, and guided missiles. The entered price of “Promethium” per 9 ounces is equal to 4.99.]]> 2023-02-21 20:19:59 UTC https://padlet.com/cregester27/lel3um7otcg7nf4n/wish/2490241012 Sources For Information cregester27 https://padlet.com/cregester27/lel3um7otcg7nf4n/wish/2491995863 history: rsc.com
Physical Properties: lenntech.com
Chemical Properties: lenntech.com
Periodic Table Image: chemistrylearner.com
Atomic Structure: chemicalelements.com
Source: rsc.com
Safety: lenntech.com
Uses: lenntech.com
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