Editing Template:Infobox praseodymium

{{Infobox element
|number=59
|symbol=Pr
|name=praseodymium
|abundance=
|abundance in earth's crust=
|abundance in oceans=
|abundance in solar system=
|left=[[cerium]]
|right=[[neodymium]]
|above=–
|below=[[protactinium|Pa]]
|category=lanthanide
|period=6
|block=f
|image name=Praseodymium.jpg
|appearance=grayish white
|electron configuration= &#91;[[xenon|Xe]]&#93; 4f<sup>3</sup> 6s<sup>2</sup>
|electrons per shell=2, 8, 18, 21, 8, 2
|phase=solid
|density gpcm3nrt=6.77
|density gpcm3mp=6.50
|melting point K=1208
|melting point C=935
|melting point F=1715
|boiling point K=3403
|boiling point C=3130
|boiling point F=5666
|heat fusion=6.89
|heat vaporization=331
|heat capacity=27.20
|vapor pressure 1=1771
|vapor pressure 10=1973
|vapor pressure 100= (2227)
|vapor pressure 1 k= (2571)
|vapor pressure 10 k= (3054)
|vapor pressure 100 k= (3779)
|vapor pressure comment=
|crystal structure=double hexagonal close packed
|oxidation states=5, 4, '''3''', 2
|oxidation states comment=(a mildly [[base (chemistry)|basic]] oxide)
|electronegativity=1.13
|number of ionization energies=3
|ionization energy 1=527
|ionization energy 2=1020
|ionization energy 3=2086
|atomic radius=182
|covalent radius=203±7
|magnetic ordering=[[paramagnetic]]
|magnetic ordering ref=<ref name=jackson>{{cite journal|author=Jackson, M. |year=2000|title=Magnetism of Rare Earth|url=http://www.irm.umn.edu/quarterly/irmq10-3.pdf |journal=The IRM quarterly |volume=10|issue=3|page=1}}</ref>
|electrical resistivity unit prefix=µ
|electrical resistivity=α,&nbsp;poly: 0.700
|electrical resistivity comment=(at&nbsp;{{abbr|r.t.|room temperature}})
|thermal conductivity=12.5
|thermal expansion=α, poly: 6.7
|thermal expansion comment=(at&nbsp;{{abbr|r.t.|room temperature}})
|speed of sound rod at 20=2280
|magnetic susceptibility= +5010.0·10<sup>−6</sup>
|magnetic susceptibility ref= &#x20;(293&nbsp;K)<ref>{{Cite book|title=CRC, Handbook of Chemistry and Physics|last=Weast|first=Robert|publisher=Chemical Rubber Company Publishing|year=1984|isbn=0-8493-0464-4|location=Boca Raton, Florida|pages=E110|quote=|via=}}</ref>
|Young's modulus=α&nbsp;form: 37.3
|Shear modulus=α&nbsp;form: 14.8
|Bulk modulus=α&nbsp;form: 28.8
|Poisson ratio=α&nbsp;form: 0.281
|Vickers hardness=250–745
|Brinell hardness=250–640
|CAS number=7440-10-0
|isotopes=
{{infobox element/isotopes stable | mn=141 | sym=Pr | na=100% | n=82 |firstlinks=yes}}
{{infobox element/isotopes decay2 | mn=142 | sym=Pr
|na=[[synthetic radioisotope|syn]] | hl=19.12&nbsp;h
|dm1=[[beta minus decay|β<sup>−</sup>]] | de1=2.162 | link1=neodymium-142 | pn1=142 | ps1=Nd
|dm2=[[electron capture|ε]] | de2=0.745 | link2=cerium-142 | pn2=142 | ps2=Ce}}
{{infobox element/isotopes decay | mn=143 | sym=Pr
|na=syn | hl=13.57&nbsp;d
|dm=β<sup>−</sup> | de=0.934 | link1=neodymium-143 | pn=143 | ps=Nd}}
|isotopes comment=
|discovered by=[[Carl Auer von Welsbach]]
|discovery date=1885
|QID=Q1386
}}<!--

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