「Protactinium」調整以後𣍐蜀樣其地方
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Sĭng hiĕk: '''Protactinium''' sê siŏh cṳ̄ng gĭng-sṳ̆k, iâ sê siŏh cṳ̄ng huá-hŏk nguòng-só. Nguòng-cṳ̄ sê̤ṳ-só sê 91, huá-hŏk hù-hô̤ sê Pa. ==Huá... |
無編輯摘要 |
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Dâ̤ 1 hòng:
{{Infobox element
|number=91
|symbol=Pa
|name=Protactini
|enname=protactinium
|laname=protactinium
|left=[[thorium|Thori]]
|right=[[Iù (gĭng-sṳ̆k)|Urani]]
|above=[[praseodymium|Praseodymi]]
|below=(Uqt)
|series=actinium-hiê
|period=7
|block=f
|group=n/a
|appearance=bright, silvery metallic luster
|image name=
|atomic mass=231.03588
|atomic mass ref=<ref name="IUPAC">[http://www.ciaaw.org/atomic-weights.htm Standard Atomic Weights 2013]. [[Commission on Isotopic Abundances and Atomic Weights]]</ref>
|atomic mass 2=2
|atomic mass comment=
|electron configuration=[[[radon|Rn]]] 5f<sup>2</sup> 6d<sup>1</sup> 7s<sup>2</sup>
|electrons per shell=2, 8, 18, 32, 20, 9, 2
|phase=gó-tā̤
|density gpcm3nrt=15.37
|melting point K=1841
|melting point C=1568
|melting point F=2854
|boiling point K=4300
|boiling point C=4027
|boiling point F=7280
|boiling point comment=(?)
|heat fusion=12.34
|heat vaporization=481
|crystal structure=tetragonal
|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>
|oxidation states=2, 3, 4, '''5'''
|oxidation states comment=(a weakly [[base (chemistry)|basic]] oxide)
|electronegativity=1.5
|number of ionization energies=1
|ionization energy 1=568
|atomic radius=163
|covalent radius=200
|magnetic ordering=[[paramagnetic]]
|magnetic ordering ref=<ref name=magnet>{{cite book |url=http://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>
|electrical resistivity unit prefix=n
|electrical resistivity at 0=177
|thermal conductivity=47
|thermal expansion=~9.9
|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>
|thermal expansion comment=(at {{abbr|r.t.|room temperature}})
|CAS number=7440-13-3
|isotopes=
{{infobox element/isotopes decay | mn=229 | sym=Pa
| na=[[synthetic radioisotope|syn]] | hl=1.5 d
| dm=[[electron capture|ε]] | de=0.311 | link1=thorium-229 | pn=229 | ps=Th}}
{{infobox element/isotopes decay | mn=230 | sym=Pa
| na=syn | hl=17.4 d
| dm=ε | de=1.310 | | link1=thorium-230 | pn=230 | ps=Th}}
{{infobox element/isotopes decay | mn=231 | sym=Pa
| na=100% | hl=3.276×10<sup>4</sup> y
| dm=[[alpha decay|α]] | de=5.150 | link1=actinium-227 | pn=227 | ps=Ac}}
{{infobox element/isotopes decay | mn=232 | sym=Pa
| na=syn | hl=1.31 d
| dm=[[beta emission|β<sup>−</sup>]] | de=1.337 | link1=uranium-232 | pn=232 | ps=U}}
{{infobox element/isotopes decay | mn=233 | sym=Pa
| na=[[trace radioisotope|trace]] | hl=26.967 d
| dm=β<sup>−</sup> | de=0.5701 | link1=uranium-233 | pn=233 | ps=U}}
{{infobox element/isotopes decay | mn=234 | sym=Pa
| na=trace | hl=6.75 h
| dm=β<sup>−</sup> | de=2.195 | pn=234 | ps=U}}
{{infobox element/isotopes decay | mn=234[[Meta state|m]] | sym=Pa
| na=trace | hl=1.17 min
| dm=β<sup>−</sup> | de=2.29 | link1=uranium-234 | pn=234 | ps=U}}
|isotopes comment=
|predicted by=[[Dmitri Mendeleev]]
|prediction date=1869
|discovery and first isolation by=[[William Crookes]]
|discovery date=1900
|named by=[[Otto Hahn]] and [[Lise Meitner]]
|named date=1917–8
}}
'''Protactinium''' sê siŏh cṳ̄ng [[gĭng-sṳ̆k]], iâ sê siŏh cṳ̄ng [[huá-hŏk nguòng-só]]. [[Nguòng-cṳ̄ sê̤ṳ-só]] sê 91, huá-hŏk hù-hô̤ sê Pa.
==Huá-hŏk séng-cék==
第5行 ⟶ 第86行：
==Cié-chṳ̄==
==Chăng-kō̤ cṳ̆-lâiu==
{{reflist}}
{{Ciŭ-gĭ-biēu}}
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