Protaktinioa

Protaktinioa (Pa)

Zenbaki atomikoa 91 duen elementu kimiko erradioaktiboa. Aktinidoen serieko metala da
Atomic Number91
Atomic Weight231.03588
masa-zenbaki231
Group
Period7
Blockf
protoi91 p+
neutroi140 n0
elektroi91 e-
Animated Bohrren eredu atomikoa of Pa (Protaktinioa)

Propietate Fisiko

Erradio Atomiko
180 pm
bolumen molar
Erradio Kobalente
169 pm
Metallic Radius
Erradio ioniko
104 pm
Crystal Radius
118 pm
Van der Waalsen erradio
243 pm
dentsitatea
15,4 g/cm³
Atomic Radii Of The Elements: Protaktinioa0102030405060708090100110120130140150160170180190200210220230240250pmErradio AtomikoErradio KobalenteMetallic RadiusVan der Waalsen erradio

Magnitude Fisiko

energia
proton affinity
Afinitate elektroniko
ionizazio energia
ionizazio energia of Pa (Protaktinioa)
Irakite-entalpia
481,2 kJ/mol
urtze-entalpia
16,7 kJ/mol
formazio entalpia estandarra
563 kJ/mol
elektroi
elektroi geruza2, 8, 18, 32, 20, 9, 2
Bohrren eredu atomikoa: Pa (Protaktinioa)
balentzia-elektroi2
Lewis egitura: Pa (Protaktinioa)
electron configuration[Rn] 5f2 6d1 7s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f2 6d1 7s2
Enhanced Bohrren eredu atomikoa of Pa (Protaktinioa)
Orbital Diagram of Pa (Protaktinioa)
Oxidazio-egoera2, 3, 4, 5
Elektronegatibotasun
1.5
Electrophilicity Index
materiaren funtsezko egoera
materiaren egoeraSolid
materiaren egoera gaseoso
Boiling Point
Melting Point
1.845,15 K
critical pressure
critical temperature
Puntu hirukoitz
appearance
kolore
Silver
appearancebright, silvery metallic luster
errefrakzio-indize
thermodynamic material property
Thermal Conductivity
Bero-dilatazio
molar heat capacity
Specific Heat Capacity
indize adiabatiko
electrical properties
typeConductor
Eroankortasun elektriko
5,6 MS/m
Erresistibitate elektriko
0,00000018 m Ω
Supereroankortasun
1,41 K
Magnetismo
typeparamagnetic
suszeptibilitate magnetiko (Mass)
0,0000000325 m³/Kg
suszeptibilitate magnetiko (Molar)
0,000000007509 m³/mol
suszeptibilitate magnetiko (Volume)
0,0004995
magnetic ordering
Curieren tenperatura
Néel temperature
egitura
Crystal StructureCentered Tetragonal (TET)
lattice constant
3,92 Å
Lattice Anglesπ/2, π/2, π/2
materialen propietate mekaniko
Gogortasun
konprimagarritasun-modulu
Zizaila modulua
Youngen modulu
Poissonen modulu
Soinuaren lastertasun
classification
CategoryActinides, Actinides
CAS Group
IUPAC Group
Glawe Number35
Mendeleev Number18
Pettifor Number46
Geochemical ClassU/Th decay series
Goldschmidt classificationlitophile

beste batzuk

Gas Basicity
polarizability
154 ± 20 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
200
Neutron Mass Absorption
zenbaki kuantiko4K11/2
talde espazial139 (I4/mmm)

Isotopes of Protactinium

Stable Isotopes0
Unstable Isotopes31
Natural Isotopes1

211Pa

masa-zenbaki211
neutron number120
atomo-masa erlatibo
211,023674036 ± 0,000074581 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
6 ± 3 ms
spin9/2
nuclear quadrupole moment
aurkikuntza-data2006
parity-

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)
p (proton emission)

212Pa

masa-zenbaki212
neutron number121
atomo-masa erlatibo
212,023184819 ± 0,000094047 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
5,8 ± 1,9 ms
spin3
nuclear quadrupole moment
aurkikuntza-data1997
parity+

decay modeintensity
α (α emission)100%

213Pa

masa-zenbaki213
neutron number122
atomo-masa erlatibo
213,021099644 ± 0,000061374 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
7,4 ± 2,4 ms
spin9/2
nuclear quadrupole moment
aurkikuntza-data1995
parity-

decay modeintensity
α (α emission)100%

214Pa

masa-zenbaki214
neutron number123
atomo-masa erlatibo
214,020891055 ± 0,00008718 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
17 ± 3 ms
spin7
nuclear quadrupole moment
aurkikuntza-data1995
parity+

decay modeintensity
α (α emission)100%

215Pa

masa-zenbaki215
neutron number124
atomo-masa erlatibo
215,019113955 ± 0,000088513 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
14 ± 2 ms
spin9/2
nuclear quadrupole moment
aurkikuntza-data1979
parity-

decay modeintensity
α (α emission)100%

216Pa

masa-zenbaki216
neutron number125
atomo-masa erlatibo
216,019134633 ± 0,000026459 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
105 ± 12 ms
spin5
nuclear quadrupole moment
aurkikuntza-data1972
parity+

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)

217Pa

masa-zenbaki217
neutron number126
atomo-masa erlatibo
217,018309024 ± 0,000013417 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
3,8 ± 0,2 ms
spin9/2
nuclear quadrupole moment
aurkikuntza-data1968
parity-

decay modeintensity
α (α emission)100%
β (β decay)

218Pa

masa-zenbaki218
neutron number127
atomo-masa erlatibo
218,020021133 ± 0,000019158 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
108 ± 5 us
spin8
nuclear quadrupole moment
aurkikuntza-data1979
parity-

decay modeintensity
α (α emission)100%

219Pa

masa-zenbaki219
neutron number128
atomo-masa erlatibo
219,019949909 ± 0,000074831 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
56 ± 9 ns
spin9/2
nuclear quadrupole moment
aurkikuntza-data2005
parity-

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)

220Pa

masa-zenbaki220
neutron number129
atomo-masa erlatibo
220,021769753 ± 0,000015732 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
0,85 ± 0,06 us
spin1
nuclear quadrupole moment
aurkikuntza-data2005
parity-

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)

221Pa

masa-zenbaki221
neutron number130
atomo-masa erlatibo
221,021873393 ± 0,000063746 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
5,9 ± 1,7 us
spin9/2
nuclear quadrupole moment
aurkikuntza-data1983
parity-

decay modeintensity
α (α emission)100%

222Pa

masa-zenbaki222
neutron number131
atomo-masa erlatibo
222,023687064 ± 0,000092975 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
3,8 ± 0,2 ms
spin1
nuclear quadrupole moment
aurkikuntza-data1970
parity-

decay modeintensity
α (α emission)100%

223Pa

masa-zenbaki223
neutron number132
atomo-masa erlatibo
223,023980414 ± 0,000081193 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
5,3 ± 0,3 ms
spin9/2
nuclear quadrupole moment
aurkikuntza-data1970
parity-

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)

224Pa

masa-zenbaki224
neutron number133
atomo-masa erlatibo
224,025617286 ± 0,000008145 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
844 ± 19 ms
spin5
nuclear quadrupole moment
aurkikuntza-data1958
parity-

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)

225Pa

masa-zenbaki225
neutron number134
atomo-masa erlatibo
225,026147927 ± 0,000087887 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
1,71 ± 0,1 s
spin5/2
nuclear quadrupole moment
aurkikuntza-data1958
parity-

decay modeintensity
α (α emission)100%

226Pa

masa-zenbaki226
neutron number135
atomo-masa erlatibo
226,027948217 ± 0,000012037 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
1,8 ± 0,2 m
spin1
nuclear quadrupole moment
aurkikuntza-data1949
parity-

decay modeintensity
α (α emission)74%
β+ (β+ decay; β+ = ϵ + e+)26%

227Pa

masa-zenbaki227
neutron number136
atomo-masa erlatibo
227,028803586 ± 0,000007797 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
38,3 ± 0,3 m
spin5/2
nuclear quadrupole moment
aurkikuntza-data1948
parity-

decay modeintensity
α (α emission)85%
ϵ (electron capture)15%

228Pa

masa-zenbaki228
neutron number137
atomo-masa erlatibo
228,031050758 ± 0,000004659 Da
g-factor
1,1666666666667 ± 0,16666666666667
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
22 ± 1 h
spin3
nuclear quadrupole moment
aurkikuntza-data1948
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)98.15%
α (α emission)1.85%

229Pa

masa-zenbaki229
neutron number138
atomo-masa erlatibo
229,032095585 ± 0,000003521 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
1,55 ± 0,04 d
spin5/2
nuclear quadrupole moment
aurkikuntza-data1949
parity+

decay modeintensity
ϵ (electron capture)99.51%
α (α emission)0.49%

230Pa

masa-zenbaki230
neutron number139
atomo-masa erlatibo
230,034539717 ± 0,000003261 Da
g-factor
1 ± 0,1
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
17,4 ± 0,5 d
spin2
nuclear quadrupole moment
aurkikuntza-data1948
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)92.2%
β (β decay)7.8%
α (α emission)0.0032%

231Pa

masa-zenbaki231
neutron number140
atomo-masa erlatibo
231,0358825 ± 0,000001901 Da
g-factor
1,3266666666667 ± 0,013333333333333
natural abundance
100
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
32,65 ± 0,2 ky
spin3/2
nuclear quadrupole moment
−1,72 ± 0,05
aurkikuntza-data1918
parity-

decay modeintensity
α (α emission)100%
SF (spontaneous fission)3%
24Ne (heavy cluster emission)13.4%
23F9.9%

232Pa

masa-zenbaki232
neutron number141
atomo-masa erlatibo
232,038590205 ± 0,000008206 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
1,32 ± 0,02 d
spin2
nuclear quadrupole moment
aurkikuntza-data1949
parity-

decay modeintensity
β (β decay)100%
ϵ (electron capture)

233Pa

masa-zenbaki233
neutron number142
atomo-masa erlatibo
233,040246535 ± 0,000001433 Da
g-factor
2,6666666666667 ± 0,46666666666667
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
26,975 ± 0,013 d
spin3/2
nuclear quadrupole moment
−3 ± 0,4
aurkikuntza-data1938
parity-

decay modeintensity
β (β decay)100%

234Pa

masa-zenbaki234
neutron number143
atomo-masa erlatibo
234,043305555 ± 0,000004395 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
6,7 ± 0,05 h
spin4
nuclear quadrupole moment
aurkikuntza-data1913
parity+

decay modeintensity
β (β decay)100%

235Pa

masa-zenbaki235
neutron number144
atomo-masa erlatibo
235,045399 ± 0,000015 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
24,4 ± 0,2 m
spin3/2
nuclear quadrupole moment
aurkikuntza-data1950
parity-

decay modeintensity
β (β decay)100%

236Pa

masa-zenbaki236
neutron number145
atomo-masa erlatibo
236,048668 ± 0,000015 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
9,1 ± 0,1 m
spin1
nuclear quadrupole moment
aurkikuntza-data1963
parity

decay modeintensity
β (β decay)100%
β SF (β-delayed fission)6%

237Pa

masa-zenbaki237
neutron number146
atomo-masa erlatibo
237,051023 ± 0,000014 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
8,7 ± 0,2 m
spin1/2
nuclear quadrupole moment
0
aurkikuntza-data1954
parity+

decay modeintensity
β (β decay)100%

238Pa

masa-zenbaki238
neutron number147
atomo-masa erlatibo
238,054637 ± 0,000017 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
2,28 ± 0,09 m
spin3
nuclear quadrupole moment
aurkikuntza-data1968
parity-

decay modeintensity
β (β decay)100%
β SF (β-delayed fission)2.6%

239Pa

masa-zenbaki239
neutron number148
atomo-masa erlatibo
239,05726 ± 0,00021 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
1,8 ± 0,5 h
spin1/2
nuclear quadrupole moment
0
aurkikuntza-data1995
parity+

decay modeintensity
β (β decay)100%

240Pa

masa-zenbaki240
neutron number149
atomo-masa erlatibo
240,061203 ± 0,000215 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
spin3
nuclear quadrupole moment
aurkikuntza-data
parity+

decay modeintensity
β (β decay)

241Pa

masa-zenbaki241
neutron number150
atomo-masa erlatibo
241,064134 ± 0,000322 Da
g-factor
natural abundance
desintegrazio erradioaktibo☢️ radioactive element
Semidesintegrazio-periodo
spin1/2
nuclear quadrupole moment
0
aurkikuntza-data
parity+

decay modeintensity
β (β decay)
Protactinium-233

historia

aurkitzailea edo asmatzaileaFredrich Soddy, John Cranston, Otto Hahn, Lise Meitner
aurkikuntzaren lekuaEngland/France
aurkikuntza-data1917
etimologiaGreek: proto and actinium (parent of actinium); it forms actinium when it radioactively decays.
pronunciationPRO-tak-tin-eh-em (ingelesa)

source

Abundance
Abundance in Earth's crust
0,0000014 mg/kg
natural abundance (ozeano)
0,00000000005 mg/L
natural abundance (gizakiaren gorputza)
0 %
natural abundance (Meteoroide)
natural abundance (Eguzkia)
Abundance in Universe
0 %

Nuclear Screening Constants