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Protactinium

A radioactive element.


Symbol
Pa

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Atomic number 91 Clip
Atomic / Molecular Weight 231.0359 gmol-1Clip
Density 15370 kgm-3Clip
Lattice constant 392 fmClip
Melting Point 1473 KClip
Boiling Point 4273 KClip
Specific heat capacity 121 Jkg-1K-1Clip
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See also: Periodic Table.

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