Protaktinioa (Pa)

Zenbaki atomikoa 91 duen elementu kimiko erradioaktiboa. Aktinidoen serieko metala da

Atomic Number	91
Atomic Weight	231.03588
masa-zenbaki	231

Group
Period	7
Block	f

protoi	91 p⁺
neutroi	140 n⁰
elektroi	91 e^-

Animated Bohrren eredu atomikoa of Pa (Protaktinioa)

Propietate Fisiko

Erradio Atomiko	180 pm 285 pm
bolumen molar	15 cm³/mol
Erradio Kobalente	169 pm 138 pm 129 pm 200 pm
Metallic Radius
Erradio ioniko	104 pm 90 pm 101 pm 78 pm 91 pm 95 pm 119,9 pm
Crystal Radius	118 pm 104 pm 115 pm 92 pm 105 pm 109 pm 133,9 pm
Van der Waalsen erradio	243 pm 264 pm 342,4 pm
dentsitatea	15,4 g/cm³

Magnitude Fisiko

{ERROR}

energia

proton affinity
Afinitate elektroniko
ionizazio energia	5,89 eV/particle 11,9 eV/particle 19 eV/particle 30,9 eV/particle 44,3 eV/particle 72 eV/particle 85,1 eV/particle 98,9 eV/particle 111 eV/particle 137 eV/particle 153 eV/particle 187 eV/particle 203 eV/particle 292 eV/particle 316 eV/particle 342 eV/particle 369 eV/particle 395 eV/particle 423 eV/particle 460 eV/particle 488 eV/particle 518 eV/particle 546 eV/particle 690 eV/particle 720 eV/particle 760 eV/particle 790 eV/particle 880 eV/particle 920 eV/particle 1.020 eV/particle 1.060 eV/particle 1.150 eV/particle 1.220 eV/particle 1.300 eV/particle 1.370 eV/particle 1.450 eV/particle 1.520 eV/particle 1.600 eV/particle 1.670 eV/particle 1.760 eV/particle 1.830 eV/particle 1.910 eV/particle 2.000 eV/particle 2.060 eV/particle 2.130 eV/particle 2.483 eV/particle 2.550 eV/particle 2.620 eV/particle 2.696 eV/particle 2.766 eV/particle 2.837 eV/particle 2.968 eV/particle 3.040 eV/particle 3.119 eV/particle 3.193 eV/particle 3.488 eV/particle 3.558 eV/particle 3.637 eV/particle 3.709 eV/particle 4.077 eV/particle 4.161 eV/particle 4.370 eV/particle 4.454 eV/particle 7.181 eV/particle 7.341 eV/particle 7.510 eV/particle 7.690 eV/particle 7.870 eV/particle 8.040 eV/particle 8.410 eV/particle 8.590 eV/particle 8.780 eV/particle 8.960 eV/particle 9.460 eV/particle 9.620 eV/particle 9.790 eV/particle 9.950 eV/particle 11.100 eV/particle 11.280 eV/particle 11.660 eV/particle 11.840 eV/particle 24.660 eV/particle 25.080 eV/particle 25.540 eV/particle 25.970 eV/particle 30.230 eV/particle 30.800 eV/particle 31.520 eV/particle 31.971,6 eV/particle 126.296,6 eV/particle 128.507 eV/particle

Irakite-entalpia	481,2 kJ/mol
urtze-entalpia	16,7 kJ/mol
formazio entalpia estandarra	563 kJ/mol
elektroi

elektroi geruza	2, 8, 18, 32, 20, 9, 2

balentzia-elektroi	2 ⓘ

electron configuration	[Rn] 5f² 6d¹ 7s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 5f² 6d¹ 7s²

Oxidazio-egoera	2, 3, 4, 5
Elektronegatibotasun	0.12149 1.5
Electrophilicity Index
materiaren funtsezko egoera

materiaren egoera
materiaren egoera gaseoso
Boiling Point
Melting Point	1.845,15 K
critical pressure
critical temperature
Puntu hirukoitz
appearance
kolore	Black #ffffff #00a1ff #00a1ff
appearance	bright, silvery metallic luster
errefrakzio-indize
thermodynamic material property
Thermal Conductivity
Bero-dilatazio
molar heat capacity
Specific Heat Capacity
indize adiabatiko
electrical properties
type	Conductor
Eroankortasun elektriko	5,6 MS/m
Erresistibitate elektriko	0,00000018 Ω*m
Supereroankortasun	1,41 K
Magnetismo
type	paramagnetic
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 Structure	{ERROR}
lattice constant	3,92 Å
Lattice Angles	π/2, π/2, π/2
materialen propietate mekaniko
Gogortasun
konprimagarritasun-modulu
Zizaila modulua
Youngen modulu
Poissonen modulu
Soinuaren lastertasun
classification
Category	Actinides, Actinides
CAS Group
IUPAC Group
Glawe Number	35
Mendeleev Number	18
Pettifor Number	46
Geochemical Class	U/Th decay series
Goldschmidt classification	litophile

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Gas Basicity
polarizability	154 ± 20 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section	200
Neutron Mass Absorption
zenbaki kuantiko	4K11/2
talde espazial	139 (I4/mmm)

Isotopes of Protactinium

Stable Isotopes	0
Unstable Isotopes	31
Natural Isotopes	1

²¹¹Pa

masa-zenbaki	211
neutron number	120
Atomo-Masa Erlatibo	211,023674036 ± 0,000074581 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	6 ± 3 ms
spin	9/2
nuclear quadrupole moment
aurkikuntza-data	2006
parity	-

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

²¹²Pa

masa-zenbaki	212
neutron number	121
Atomo-Masa Erlatibo	212,023184819 ± 0,000094047 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	5,8 ± 1,9 ms
spin	3
nuclear quadrupole moment
aurkikuntza-data	1997
parity	+

decay mode	intensity
α (α emission)	100%

²¹³Pa

masa-zenbaki	213
neutron number	122
Atomo-Masa Erlatibo	213,021099644 ± 0,000061374 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	7,4 ± 2,4 ms
spin	9/2
nuclear quadrupole moment
aurkikuntza-data	1995
parity	-

decay mode	intensity
α (α emission)	100%

²¹⁴Pa

masa-zenbaki	214
neutron number	123
Atomo-Masa Erlatibo	214,020891055 ± 0,00008718 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	17 ± 3 ms
spin	7
nuclear quadrupole moment
aurkikuntza-data	1995
parity	+

decay mode	intensity
α (α emission)	100%

²¹⁵Pa

masa-zenbaki	215
neutron number	124
Atomo-Masa Erlatibo	215,019113955 ± 0,000088513 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	14 ± 2 ms
spin	9/2
nuclear quadrupole moment
aurkikuntza-data	1979
parity	-

decay mode	intensity
α (α emission)	100%

²¹⁶Pa

masa-zenbaki	216
neutron number	125
Atomo-Masa Erlatibo	216,019134633 ± 0,000026459 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	105 ± 12 ms
spin	5
nuclear quadrupole moment
aurkikuntza-data	1972
parity	+

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

²¹⁷Pa

masa-zenbaki	217
neutron number	126
Atomo-Masa Erlatibo	217,018309024 ± 0,000013417 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	3,8 ± 0,2 ms
spin	9/2
nuclear quadrupole moment
aurkikuntza-data	1968
parity	-

decay mode	intensity
α (α emission)	100%
β⁻ (β⁻ decay)

²¹⁸Pa

masa-zenbaki	218
neutron number	127
Atomo-Masa Erlatibo	218,020021133 ± 0,000019158 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	108 ± 5 us
spin	8
nuclear quadrupole moment
aurkikuntza-data	1979
parity	-

decay mode	intensity
α (α emission)	100%

²¹⁹Pa

masa-zenbaki	219
neutron number	128
Atomo-Masa Erlatibo	219,019949909 ± 0,000074831 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	56 ± 9 ns
spin	9/2
nuclear quadrupole moment
aurkikuntza-data	2005
parity	-

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

²²⁰Pa

masa-zenbaki	220
neutron number	129
Atomo-Masa Erlatibo	220,021769753 ± 0,000015732 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	0,85 ± 0,06 us
spin	1
nuclear quadrupole moment
aurkikuntza-data	2005
parity	-

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

²²¹Pa

masa-zenbaki	221
neutron number	130
Atomo-Masa Erlatibo	221,021873393 ± 0,000063746 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	5,9 ± 1,7 us
spin	9/2
nuclear quadrupole moment
aurkikuntza-data	1983
parity	-

decay mode	intensity
α (α emission)	100%

²²²Pa

masa-zenbaki	222
neutron number	131
Atomo-Masa Erlatibo	222,023687064 ± 0,000092975 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	3,8 ± 0,2 ms
spin	1
nuclear quadrupole moment
aurkikuntza-data	1970
parity	-

decay mode	intensity
α (α emission)	100%

²²³Pa

masa-zenbaki	223
neutron number	132
Atomo-Masa Erlatibo	223,023980414 ± 0,000081193 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	5,3 ± 0,3 ms
spin	9/2
nuclear quadrupole moment
aurkikuntza-data	1970
parity	-

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

²²⁴Pa

masa-zenbaki	224
neutron number	133
Atomo-Masa Erlatibo	224,025617286 ± 0,000008145 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	844 ± 19 ms
spin	5
nuclear quadrupole moment
aurkikuntza-data	1958
parity	-

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

²²⁵Pa

masa-zenbaki	225
neutron number	134
Atomo-Masa Erlatibo	225,026147927 ± 0,000087887 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	1,71 ± 0,1 s
spin	5/2
nuclear quadrupole moment
aurkikuntza-data	1958
parity	-

decay mode	intensity
α (α emission)	100%

²²⁶Pa

masa-zenbaki	226
neutron number	135
Atomo-Masa Erlatibo	226,027948217 ± 0,000012037 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	1,8 ± 0,2 m
spin	1
nuclear quadrupole moment
aurkikuntza-data	1949
parity	-

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

²²⁷Pa

masa-zenbaki	227
neutron number	136
Atomo-Masa Erlatibo	227,028803586 ± 0,000007797 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	38,3 ± 0,3 m
spin	5/2
nuclear quadrupole moment
aurkikuntza-data	1948
parity	-

decay mode	intensity
α (α emission)	85%
ϵ (electron capture)	15%

²²⁸Pa

masa-zenbaki	228
neutron number	137
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
spin	3
nuclear quadrupole moment
aurkikuntza-data	1948
parity	+

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

²²⁹Pa

masa-zenbaki	229
neutron number	138
Atomo-Masa Erlatibo	229,032095585 ± 0,000003521 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	1,55 ± 0,04 d
spin	5/2
nuclear quadrupole moment
aurkikuntza-data	1949
parity	+

decay mode	intensity
ϵ (electron capture)	99.51%
α (α emission)	0.49%

²³⁰Pa

masa-zenbaki	230
neutron number	139
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
spin	2
nuclear quadrupole moment
aurkikuntza-data	1948
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	92.2%
β⁻ (β⁻ decay)	7.8%
α (α emission)	0.0032%

²³¹Pa

masa-zenbaki	231
neutron number	140
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
spin	3/2
nuclear quadrupole moment	−1,72 ± 0,05
aurkikuntza-data	1918
parity	-

decay mode	intensity
α (α emission)	100%
SF (spontaneous fission)	3%
24Ne (heavy cluster emission)	13.4%
23F	9.9%

²³²Pa

masa-zenbaki	232
neutron number	141
Atomo-Masa Erlatibo	232,038590205 ± 0,000008206 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	1,32 ± 0,02 d
spin	2
nuclear quadrupole moment
aurkikuntza-data	1949
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
ϵ (electron capture)

²³³Pa

masa-zenbaki	233
neutron number	142
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
spin	3/2
nuclear quadrupole moment	−3 ± 0,4
aurkikuntza-data	1938
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

²³⁴Pa

masa-zenbaki	234
neutron number	143
Atomo-Masa Erlatibo	234,043305555 ± 0,000004395 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	6,7 ± 0,05 h
spin	4
nuclear quadrupole moment
aurkikuntza-data	1913
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

²³⁵Pa

masa-zenbaki	235
neutron number	144
Atomo-Masa Erlatibo	235,045399 ± 0,000015 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	24,4 ± 0,2 m
spin	3/2
nuclear quadrupole moment
aurkikuntza-data	1950
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

²³⁶Pa

masa-zenbaki	236
neutron number	145
Atomo-Masa Erlatibo	236,048668 ± 0,000015 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	9,1 ± 0,1 m
spin	1
nuclear quadrupole moment
aurkikuntza-data	1963
parity

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ SF (β⁻-delayed fission)	6%

²³⁷Pa

masa-zenbaki	237
neutron number	146
Atomo-Masa Erlatibo	237,051023 ± 0,000014 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	8,7 ± 0,2 m
spin	1/2
nuclear quadrupole moment	0
aurkikuntza-data	1954
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

²³⁸Pa

masa-zenbaki	238
neutron number	147
Atomo-Masa Erlatibo	238,054637 ± 0,000017 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	2,28 ± 0,09 m
spin	3
nuclear quadrupole moment
aurkikuntza-data	1968
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ SF (β⁻-delayed fission)	2.6%

²³⁹Pa

masa-zenbaki	239
neutron number	148
Atomo-Masa Erlatibo	239,05726 ± 0,00021 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	1,8 ± 0,5 h
spin	1/2
nuclear quadrupole moment	0
aurkikuntza-data	1995
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

²⁴⁰Pa

masa-zenbaki	240
neutron number	149
Atomo-Masa Erlatibo	240,061203 ± 0,000215 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo
spin	3
nuclear quadrupole moment
aurkikuntza-data
parity	+

decay mode	intensity
β⁻ (β⁻ decay)

²⁴¹Pa

masa-zenbaki	241
neutron number	150
Atomo-Masa Erlatibo	241,064134 ± 0,000322 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo
spin	1/2
nuclear quadrupole moment	0
aurkikuntza-data
parity	+

decay mode	intensity
β⁻ (β⁻ decay)

historia

aurkitzailea edo asmatzailea	Fredrich Soddy, John Cranston, Otto Hahn, Lise Meitner
aurkikuntzaren lekua	England/France
aurkikuntza-data	1917
etimologia	Greek: proto and actinium (parent of actinium); it forms actinium when it radioactively decays.
pronunciation	PRO-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

Protaktinioa on ChemicalAid

Protaktinioa (Pa)

Propietate Fisiko

Magnitude Fisiko

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Isotopes of Protactinium

211Pa

212Pa

213Pa

214Pa

215Pa

216Pa

217Pa

218Pa

219Pa

220Pa

221Pa

222Pa

223Pa

224Pa

225Pa

226Pa

227Pa

228Pa

229Pa

230Pa

231Pa

232Pa

233Pa

234Pa

235Pa

236Pa

237Pa

238Pa

239Pa

240Pa

241Pa

historia

source

Nuclear Screening Constants

²¹¹Pa

²¹²Pa

²¹³Pa

²¹⁴Pa

²¹⁵Pa

²¹⁶Pa

²¹⁷Pa

²¹⁸Pa

²¹⁹Pa

²²⁰Pa

²²¹Pa

²²²Pa

²²³Pa

²²⁴Pa

²²⁵Pa

²²⁶Pa

²²⁷Pa

²²⁸Pa

²²⁹Pa

²³⁰Pa

²³¹Pa

²³²Pa

²³³Pa

²³⁴Pa

²³⁵Pa

²³⁶Pa

²³⁷Pa

²³⁸Pa

²³⁹Pa

²⁴⁰Pa

²⁴¹Pa