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Protactinium Element

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

Periodic Table
Periodic Table Elements
Periodic Table Facts


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