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Atomic symbol - Pa
Atomic weight - (231.0359)
Atomic number - 91
Electron configuration - 2-8-18-32-20-9-2
Oxidation states - +4, +5
State of matter - solid
heavy metal-ductile
Discovered in 1913 by Kasimir Fajans and O.H. G.hring
Boils at unknown, melts at unknown

Notes:
Protactinium is a radioactive element.

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