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Protactinium

Symbol: Pa
Atomic Mass/Weight: 231.0359 AMU
Atomic Number: 91
Oxidation State (Bold Most Stable):  +5,+4
Melting Point: N/A
Boiling Point: N/A
# of Isotopes: 0
Electron Configuration: [Rn] 5f2 6d1 7s2
Lewis Dot Diagram:
Protactinium - Lewis Dot Diagram