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Inorganic Chemicals > Elements > Metals, Heavy > Protactinium
Inorganic Chemicals > Metals > Metals, Heavy > Protactinium
Inorganic Chemicals > Metals > Actinoid Series Elements > Protactinium
Inorganic Chemicals > Elements > Elements, Radioactive > Actinoid Series Elements > Protactinium
... > Inorganic Chemicals > Isotopes > Radioisotopes > Elements, Radioactive > Actinoid Series Elements > Protactinium

Preferred term

Protactinium  

Type

  • Topical Descriptor

Broader concept

Scope note

  • 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 alpha-emission.

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URI

http://www.yso.fi/onto/mesh/D011478

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