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| rdfs:comment | - Because of its scarcity, high radioactivity and high toxicity, there are currently no uses for protactinium outside of scientific research.
- Protactinium (symbol Pa) is a chemical element, atomic number 91 on the periodic table.
- Protactinium is element 91. It is radioactive and its most stable isotope has a half-life of around 30,000-40,000 years.
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| Row 1 info | - Otto H. Gohring and Kasimir Fajans
- protactinium
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| Row 3 info | - 91
- Greek for 'first beam'. '-proto' means first, while actinium mean 'ray or beam'
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- General Properties
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| abstract | - Because of its scarcity, high radioactivity and high toxicity, there are currently no uses for protactinium outside of scientific research.
- Protactinium (symbol Pa) is a chemical element, atomic number 91 on the periodic table.
- Protactinium is element 91. It is radioactive and its most stable isotope has a half-life of around 30,000-40,000 years.
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