Protaktinium: Verskil tussen weergawes
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{{Elementboks_opskrif | getal=91 | simbool=Pa | naam=protaktinium | links=[[torium]] | regs=[[uraan]] | bo=[[Praseodimium|Pr]] | onder=Uqp | kleur1=#ff99cc | kleur2=black }}
{{Elementboks_reeks | [[Aktinied|Aktiniede]] }}
{{Elementboks_groepperiodeblok | groep=Ac | periode=7 | blok=f }}
{{Elementboks_voorkoms_beeld | HD.6D.102 (10730945866) | Helder silwer metaalglans }}
{{Elementboks_atoommassa_gpm | (231,03588(2)) }}
{{Elementboks_ekonfig | [[[radon|Rn]]] 5f<sup>2</sup> 6d<sup>1</sup> 7s<sup>2</sup> }}
{{Elementboks_eperskil | 2, 8, 18, 32, 20, 9, 2 }}
{{Elementboks_afdeling_fisieseiensk | kleur1=#ff99cc | kleur2=black }}
{{Elementboks_fase | [[vastestof]] }}
{{Elementboks_digtheid_gpcm3nkt | 15,37 }}
{{Elementboks_smeltpunt | k=1841 | c=1568 }}
{{Elementboks_kookpunt | k=4300 | c=4027 }}
{{Elementboks_smeltwarm_kjpmol | 12,34 }}
{{Elementboks_verdampwarm_kjpmol | 481 }}
{{Elementboks_afdeling_atoomeiensk | kleur1=#ff99cc | kleur2=black }}
{{Elementboks_kristalstruktuur | tetragonaal<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>}}
{{Elementboks Strukturbericht |}}
{{Elementboks_oksiedtoest | 2, 3, 4, '''5''' ('n Swak [[Basis|basiese]] oksied) }}
{{Elementboks_elektroneg_pauling | 1,5 }}
{{Elementboks_ioonenergie3 | 1 | 568 | }}
{{Elementboks_kovalenteradius_pm | 163 }}
{{Elementboks_afdeling_diverse | kleur1 =#ff99cc | kleur2=black }}
{{Elementboks_magneties | [[magnetisme|paramagneties]]<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> }}
{{Elementboks_eweerstand_ohmmteen20 | 177 n}}
{{Elementboks_termiesegeleiding_wpmkteen300k | 47 }}
{{Elementboks_cas_nommer | 7440-13-3 }}
{{Elementboks afdeling geskiedenis |kleur1=#ff99cc | kleur2=black }}
{{Elementboks ontdekdatum | 1913 }}
{{Elementboks ontdekdeur | Kazimierz Fajans en Oswald Helmuth Göhring}}
{{Elementboks_isotope_begin | kleur1=#ff99cc | kleur2=black| isotopevan=protaktinium }}
{{Elementboks_isotope_verval | mg=229 | sim=Pa | nv=[[Sintetiese radioaktiewe isotoop|syn]] | hl=1,5 [[dag|d]]
| vm=[[Elektronvangs|ε]] | ve=0,311 | pg=229 | ps=[[Torium|Th]] }}
{{Elementboks_isotope_verval | mg=230 | sim=Pa | nv=[[Sintetiese radioaktiewe isotoop|syn]] | hl=17,4 [[dag|d]]
| vm=[[Elektronvangs|ε]] | ve=1,310 | pg=230 | ps=[[Torium|Th]] }}
{{elementboks_isotope_verval | mg=231 | sim=Pa | nv=100% | hl=3,276×10<sup>4</sup> [[jaar|j]]
| vm=[[Alfaverval|α]] | ve=5,150 | pg=227 | ps=[[aktinium|Ac]] }}
{{Elementboks_isotope_verval | mg=232 | sim=Pa | nv=[[Sintetiese radioaktiewe isotoop|syn]] | hl=1,31 [[dag|d]]
| vm=[[Betaverval|β<sup>−</sup>]] | ve=1,337 | pg=232 | ps=[[Uraan|U]] }}
{{Elementboks_isotope_verval | mg=233 | sim=Pa | nv=spoor | hl=26,967 [[dag|d]]
| vm=[[betaverval|β<sup>−</sup>]] | ve=0,5701 | pg=233 | ps=[[Uraan|U]] }}
{{Elementboks_isotope_verval | mg=234 | sim=Pa | nv=spoor | hl=6,75 [[uur|h]]
| vm=[[Betaverval|β<sup>−</sup>]] | ve=2,195 | pg=234 | ps=[[Uraan|U]] }}
{{Elementboks_isotope_verval | mg=234m | sim=Pa | nv=spoor | hl=1,17 [[minuut|min]]
| vm=[[betaverval|β<sup>−</sup>]] | ve=2,29 | pg=234 | ps=[[Uraan|U]] }}
{{Elementboks_isotope_eindig}}
{{Elementboks_voetskrif | kleur1=#ff99cc | kleur2=black }}
'''Protaktinium''' is 'n [[chemiese element]] met die simbool '''Pa''' en [[atoomgetal]] 91. Dit is 'n metaalsilwerige [[aktinied]].
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== Isotope ==
{{
{| class="wikitable" style="font-size:90%;"
! colspan="6" | Stabielste isotope
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Van protaktinium is 29 radio-isotope bekend. Met 'n [[halfleeftyd]] van 32 760 jaar is <sup>231</sup>Pa die stabielste. Ander isotope met redelike lang halfleeftye is <sup>233</sup>Pa (byna 27 dae) en <sup>230</sup>Pa (17,4 dae). Die oorblywende isotope is baie onstabiel.
== Eksterne skakels ==▼
{{CommonsKategorie-inlyn|Protactinium}}▼
== Verwysings ==
{{Verwysings}}
▲== Eksterne skakels ==
▲{{CommonsKategorie-inlyn|Protactinium}}
{{Navigasie Periodieke tabel}}
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