https://simple.wiktionary.org/wiki/protactinium
protactinium - Simple English Wiktionary
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https://www.livescience.com/39728-protactinium.html
Facts About Protactinium | Live Science
Sep 17, 2013 - Properties, sources and uses of the element protactinium.
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https://physics.nist.gov/cgi-bin/Star/chooseElement.pl?elNum=91&elName=Protactinium&filename=ESTAR-t.html
NIST ESTAR Database Program: Text-only version: Protactinium
ESTAR program calculates stopping-power and range tables for electrons in various materials
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https://www.semanticscholar.org/topic/Protactinium/382648
Protactinium | Semantic Scholar
Protactinium. A radioactive element of the actinide group of metals. It has the atomic symbol Pa, atomic number 91, and atomic weight 231. It decays by...
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https://ia.wikipedia.org/wiki/Protactinium
Protactinium - Wikipedia, le encyclopedia libere
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https://en.gmw.cn/2025-06/06/content_38124449.htm
Scientists discover new, extremely neutron-deficient isotope protactinium-210 _Guangming Online
BEIJING, June 5 (Xinhua) -- A research team led by Chinese scientists has synthesized a new isotope protactinium-210 for the first time, which is currently the...
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https://hsb.wikipedia.org/wiki/Protactinium?action=edit&redlink=1
Protactinium so wutworja - Wikipedija
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https://publications-cnrc.canada.ca/eng/view/object/?id=998d1baa-f76a-4800-8510-4e6066f5a835
Production and standardization of an on-demand protactinium-233 tracer - NRC Publications Archive -...
Production and standardization of an on-demand protactinium-233 tracer