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Template:Infobox protactinium - Revision history
2026-10-18T07:22:56Z
Revision history for this page on the wiki
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imported>Vitaium: Replacing it with free (public domain) image of protactinium found in Commons
2022-03-21T12:38:48Z
<p>Replacing it with free (public domain) image of protactinium found in Commons</p>
<p><b>New page</b></p><div>{{Infobox element<br />
|number=91<br />
|symbol=Pa<br />
|name=protactinium<br />
|abundance=<br />
|abundance in earth's crust=<br />
|abundance in oceans=<br />
|abundance in solar system=<br />
|left=[[thorium]]<br />
|right=[[uranium]]<br />
|above=[[praseodymium|Pr]]<br />
|below=(Uqp)<br />
|appearance=bright, silvery metallic luster<br />
|image name=Protactinium-233.jpg<br />
|electrons per shell=2, 8, 18, 32, 20, 9, 2<br />
|phase=<br />
|density gpcm3nrt=15.37<br />
|melting point K=1841<br />
|melting point C=1568<br />
|melting point F=2854<br />
|boiling point K=4300<br />
|boiling point C=4027<br />
|boiling point F=7280<br />
|boiling point comment=(?)<br />
|heat fusion=12.34<br />
|heat vaporization=481<br />
|crystal structure=body-centered tetragonal<br />
|crystal structure ref=<ref name=str>{{cite journal|last1=Donohue|first1=J.|title=On the crystal structure of protactinium metal|journal=[[Acta Crystallographica]]|volume=12|pages=697|year=1959|doi=10.1107/S0365110X59002031|issue=9}}</ref><br />
|electronegativity=1.5<br />
|number of ionization energies=1<br />
|ionization energy 1=568<br />
|atomic radius=163<br />
|covalent radius=200<br />
|magnetic ordering=[[paramagnetic]]<br />
|magnetic ordering ref=<ref name=magnet>{{cite book |url=https://web.archive.org/web/20110303222309/http://www-d0.fnal.gov/hardware/cal/lvps_info/engineering/elementmagn.pdf|chapter=Magnetic susceptibility of the elements and inorganic compounds| editor = Lide, D. R. | title = CRC Handbook of Chemistry and Physics | edition = 86th | location = Boca Raton (FL) | publisher = CRC Press | year = 2005 | isbn = 0-8493-0486-5 }}</ref><br />
|electrical resistivity unit prefix=n<br />
|electrical resistivity at 0=177<br />
|thermal conductivity=47<br />
|thermal expansion=~9.9<br />
|thermal expansion ref=<ref>{{cite book|chapter=Chapter 2. Thermal Expansion|url=http://www.owlnet.rice.edu/~msci301/ThermalExpansion.pdf|page=11|publisher=ASM International|title=ASM Ready Reference: Thermal Properties of Metals |editor=Cverna, Fran |year=2002|isbn=0871707683}}</ref><br />
|thermal expansion comment=(at&nbsp;{{abbr|r.t.|room temperature}})<br />
|CAS number=7440-13-3<br />
|magnetic susceptibility=<br />
|magnetic susceptibility ref=<br />
|isotopes=<br />
{{infobox element/isotopes decay | mn=229 | sym=Pa<br />
|na=[[synthetic radioisotope|syn]] | hl=1.5&nbsp;d<br />
|dm=[[electron capture|ε]] | de=0.311 | link1=thorium-229 | pn=229 | ps=Th}}<br />
{{infobox element/isotopes decay | mn=230 | sym=Pa<br />
|na=syn | hl=17.4&nbsp;d<br />
|dm=ε | de=1.310 | | link1=thorium-230 | pn=230 | ps=Th}}<br />
{{infobox element/isotopes decay | mn=231 | sym=Pa<br />
|na=100% | hl=3.276×10<sup>4</sup>&nbsp;y<br />
|dm=[[alpha decay|α]] | de=5.150 | link1=actinium-227 | pn=227 | ps=Ac}}<br />
{{infobox element/isotopes decay | mn=232 | sym=Pa<br />
|na=syn | hl=1.31&nbsp;d<br />
|dm=[[beta emission|β<sup>−</sup>]] | de=1.337 | link1=uranium-232 | pn=232 | ps=U}}<br />
{{infobox element/isotopes decay | mn=233 | sym=Pa<br />
|na=[[trace radioisotope|trace]] | hl=26.967&nbsp;d<br />
|dm=β<sup>−</sup> | de=0.5701 | link1=uranium-233 | pn=233 | ps=U}}<br />
{{infobox element/isotopes decay | mn=234 | sym=Pa<br />
|na=trace | hl=6.75&nbsp;h<br />
|dm=β<sup>−</sup> | de=2.195 | pn=234 | ps=U}}<br />
{{infobox element/isotopes decay | mn=234[[Meta state|m]] | sym=Pa<br />
|na=trace | hl=1.17&nbsp;min<br />
|dm=β<sup>−</sup> | de=2.29 | link1=uranium-234 | pn=234 | ps=U}}<br />
|isotopes comment=<br />
|predicted by=[[Dmitri Mendeleev]]<br />
|prediction date=1869<br />
|discovery and first isolation by=[[Kasimir Fajans]] and [[Oswald Helmuth Göhring]]<br />
|discovery date=1913<br />
|named by=[[Otto Hahn]] and [[Lise Meitner]]<br />
|named date=1917–8<br />
|QID=Q1109<br />
}}<!--<br />
<br />
--><noinclude><br />
{{Infobox element/element navigation|symbol=Pa}}<br />
{{Template reference list}}<br />
{{documentation|1=Template:Infobox element/doc}}<br />
</noinclude></div>
imported>Vitaium