Protactinium Element

Protactinium
Atomic Number	: 91
Atomic Weight	: 231.03588
Boiling Point	: -4000^oC
Melting Point	: 1572^oC
Phase at Room Temperature:	: Solid
Element Classification:	: Metal
Period Number:	: 7
Discovered Year:	: 1913
Discovered by:	: Kasimir Fajans and O. Gohring .

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