Protaktinium

Protaktinium (Pa)

element with symbol Pa and atomic number of 91
Atomic Number91
Atomic Weight231.03588
Nombor jisim231
Group
Period7
Blockf
proton91 p+
neutron140 n0
Elektron91 e-
Animated Model Bohr of Pa (Protaktinium)

Sifat Fizikal

Jejari Atom
180 pm
molar volume
Jejari kovalen
169 pm
Metallic Radius
ionic radius
104 pm
Crystal Radius
118 pm
Jejari van der Waals
243 pm
ketumpatan
15.4 g/cm³
Atomic Radii Of The Elements: Protaktinium0102030405060708090100110120130140150160170180190200210220230240250pmJejari AtomJejari KovalenMetallic RadiusJejari van der Waals

Sifat Kimia

tenaga
proton affinity
Pertalian elektron
ionization energy
ionization energy of Pa (Protaktinium)
Entalpi pengewapan
481.2 kJ/mol
entalpi pelakuran
16.7 kJ/mol
standard enthalpy of formation
563 kJ/mol
Elektron
Petala elektron2, 8, 18, 32, 20, 9, 2
Model Bohr: Pa (Protaktinium)
Elektron valens2
Teori ion Lewis: Pa (Protaktinium)
tatarajah elektron[Rn] 5f2 6d1 7s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f2 6d1 7s2
Enhanced Model Bohr of Pa (Protaktinium)
Orbital Diagram of Pa (Protaktinium)
Keadaan pengoksidaan2, 3, 4, 5
Keelektronegatifan
1.5
Electrophilicity Index
keadaan jirim asas
fasa jirimSolid
gaseous state of matter
Boiling Point
Melting Point
1,845.15 K
critical pressure
critical temperature
triple point
rupa
warna
Silver
rupabright, silvery metallic luster
indeks biasan
sifat bahan
Thermal Conductivity
Pengembangan terma
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
typeConductor
Kekonduksian elektrik
5.6 MS/m
Kerintangan dan kekonduksian elektrik
0.00000018 m Ω
Kesuperkonduksian
1.41 K
kemagnetan
typeparamagnetic
magnetic susceptibility (Mass)
0.0000000325 m³/Kg
magnetic susceptibility (Molar)
0.000000007509 m³/mol
magnetic susceptibility (Volume)
0.0004995
magnetic ordering
Suhu Curie
Néel temperature
struktur
Crystal StructureCentered Tetragonal (TET)
lattice constant
3.92 Å
Lattice Anglesπ/2, π/2, π/2
mechanical property
hardness
Modulus pukal
shear modulus
Young's modulus
Nisbah Poisson
Kelajuan bunyi
pengelasan
CategoryActinides, Actinides
CAS Group
IUPAC Group
Glawe Number35
Mendeleev Number18
Pettifor Number46
Geochemical ClassU/Th decay series
Goldschmidt classificationlitophile

other

Gas Basicity
polarizability
154 ± 20 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
200
Neutron Mass Absorption
Nombor kuantum4K11/2
space group139 (I4/mmm)

Isotopes of Protactinium

Stable Isotopes0
Unstable Isotopes31
Natural Isotopes1

211Pa

Nombor jisim211
nombor neutron120
jisim atom relatif
211.023674036 ± 0.000074581 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
6 ± 3 ms
Spin9/2
nuclear quadrupole moment
tarikh penemuan2006
parity-

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

212Pa

Nombor jisim212
nombor neutron121
jisim atom relatif
212.023184819 ± 0.000094047 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
5.8 ± 1.9 ms
Spin3
nuclear quadrupole moment
tarikh penemuan1997
parity+

decay modeKeamatan (fizik)
α (α emission)100%

213Pa

Nombor jisim213
nombor neutron122
jisim atom relatif
213.021099644 ± 0.000061374 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
7.4 ± 2.4 ms
Spin9/2
nuclear quadrupole moment
tarikh penemuan1995
parity-

decay modeKeamatan (fizik)
α (α emission)100%

214Pa

Nombor jisim214
nombor neutron123
jisim atom relatif
214.020891055 ± 0.00008718 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
17 ± 3 ms
Spin7
nuclear quadrupole moment
tarikh penemuan1995
parity+

decay modeKeamatan (fizik)
α (α emission)100%

215Pa

Nombor jisim215
nombor neutron124
jisim atom relatif
215.019113955 ± 0.000088513 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
14 ± 2 ms
Spin9/2
nuclear quadrupole moment
tarikh penemuan1979
parity-

decay modeKeamatan (fizik)
α (α emission)100%

216Pa

Nombor jisim216
nombor neutron125
jisim atom relatif
216.019134633 ± 0.000026459 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
105 ± 12 ms
Spin5
nuclear quadrupole moment
tarikh penemuan1972
parity+

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

217Pa

Nombor jisim217
nombor neutron126
jisim atom relatif
217.018309024 ± 0.000013417 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
3.8 ± 0.2 ms
Spin9/2
nuclear quadrupole moment
tarikh penemuan1968
parity-

decay modeKeamatan (fizik)
α (α emission)100%
β (β decay)

218Pa

Nombor jisim218
nombor neutron127
jisim atom relatif
218.020021133 ± 0.000019158 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
108 ± 5 us
Spin8
nuclear quadrupole moment
tarikh penemuan1979
parity-

decay modeKeamatan (fizik)
α (α emission)100%

219Pa

Nombor jisim219
nombor neutron128
jisim atom relatif
219.019949909 ± 0.000074831 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
56 ± 9 ns
Spin9/2
nuclear quadrupole moment
tarikh penemuan2005
parity-

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

220Pa

Nombor jisim220
nombor neutron129
jisim atom relatif
220.021769753 ± 0.000015732 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
0.85 ± 0.06 us
Spin1
nuclear quadrupole moment
tarikh penemuan2005
parity-

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

221Pa

Nombor jisim221
nombor neutron130
jisim atom relatif
221.021873393 ± 0.000063746 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
5.9 ± 1.7 us
Spin9/2
nuclear quadrupole moment
tarikh penemuan1983
parity-

decay modeKeamatan (fizik)
α (α emission)100%

222Pa

Nombor jisim222
nombor neutron131
jisim atom relatif
222.023687064 ± 0.000092975 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
3.8 ± 0.2 ms
Spin1
nuclear quadrupole moment
tarikh penemuan1970
parity-

decay modeKeamatan (fizik)
α (α emission)100%

223Pa

Nombor jisim223
nombor neutron132
jisim atom relatif
223.023980414 ± 0.000081193 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
5.3 ± 0.3 ms
Spin9/2
nuclear quadrupole moment
tarikh penemuan1970
parity-

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

224Pa

Nombor jisim224
nombor neutron133
jisim atom relatif
224.025617286 ± 0.000008145 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
844 ± 19 ms
Spin5
nuclear quadrupole moment
tarikh penemuan1958
parity-

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

225Pa

Nombor jisim225
nombor neutron134
jisim atom relatif
225.026147927 ± 0.000087887 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
1.71 ± 0.1 s
Spin5/2
nuclear quadrupole moment
tarikh penemuan1958
parity-

decay modeKeamatan (fizik)
α (α emission)100%

226Pa

Nombor jisim226
nombor neutron135
jisim atom relatif
226.027948217 ± 0.000012037 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
1.8 ± 0.2 m
Spin1
nuclear quadrupole moment
tarikh penemuan1949
parity-

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

227Pa

Nombor jisim227
nombor neutron136
jisim atom relatif
227.028803586 ± 0.000007797 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
38.3 ± 0.3 m
Spin5/2
nuclear quadrupole moment
tarikh penemuan1948
parity-

decay modeKeamatan (fizik)
α (α emission)85%
ϵ (electron capture)15%

228Pa

Nombor jisim228
nombor neutron137
jisim atom relatif
228.031050758 ± 0.000004659 Da
g-factor
1.1666666666667 ± 0.16666666666667
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
22 ± 1 h
Spin3
nuclear quadrupole moment
tarikh penemuan1948
parity+

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

229Pa

Nombor jisim229
nombor neutron138
jisim atom relatif
229.032095585 ± 0.000003521 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
1.55 ± 0.04 d
Spin5/2
nuclear quadrupole moment
tarikh penemuan1949
parity+

decay modeKeamatan (fizik)
ϵ (electron capture)99.51%
α (α emission)0.49%

230Pa

Nombor jisim230
nombor neutron139
jisim atom relatif
230.034539717 ± 0.000003261 Da
g-factor
1 ± 0.1
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
17.4 ± 0.5 d
Spin2
nuclear quadrupole moment
tarikh penemuan1948
parity-

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

231Pa

Nombor jisim231
nombor neutron140
jisim atom relatif
231.0358825 ± 0.000001901 Da
g-factor
1.3266666666667 ± 0.013333333333333
natural abundance
100
Reputan radioaktif☢️ radioactive element
setengah hayat
32.65 ± 0.2 ky
Spin3/2
nuclear quadrupole moment
-1.72 ± 0.05
tarikh penemuan1918
parity-

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

232Pa

Nombor jisim232
nombor neutron141
jisim atom relatif
232.038590205 ± 0.000008206 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
1.32 ± 0.02 d
Spin2
nuclear quadrupole moment
tarikh penemuan1949
parity-

decay modeKeamatan (fizik)
β (β decay)100%
ϵ (electron capture)

233Pa

Nombor jisim233
nombor neutron142
jisim atom relatif
233.040246535 ± 0.000001433 Da
g-factor
2.6666666666667 ± 0.46666666666667
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
26.975 ± 0.013 d
Spin3/2
nuclear quadrupole moment
-3 ± 0.4
tarikh penemuan1938
parity-

decay modeKeamatan (fizik)
β (β decay)100%

234Pa

Nombor jisim234
nombor neutron143
jisim atom relatif
234.043305555 ± 0.000004395 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
6.7 ± 0.05 h
Spin4
nuclear quadrupole moment
tarikh penemuan1913
parity+

decay modeKeamatan (fizik)
β (β decay)100%

235Pa

Nombor jisim235
nombor neutron144
jisim atom relatif
235.045399 ± 0.000015 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
24.4 ± 0.2 m
Spin3/2
nuclear quadrupole moment
tarikh penemuan1950
parity-

decay modeKeamatan (fizik)
β (β decay)100%

236Pa

Nombor jisim236
nombor neutron145
jisim atom relatif
236.048668 ± 0.000015 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
9.1 ± 0.1 m
Spin1
nuclear quadrupole moment
tarikh penemuan1963
parity

decay modeKeamatan (fizik)
β (β decay)100%
β SF (β-delayed fission)6%

237Pa

Nombor jisim237
nombor neutron146
jisim atom relatif
237.051023 ± 0.000014 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
8.7 ± 0.2 m
Spin1/2
nuclear quadrupole moment
0
tarikh penemuan1954
parity+

decay modeKeamatan (fizik)
β (β decay)100%

238Pa

Nombor jisim238
nombor neutron147
jisim atom relatif
238.054637 ± 0.000017 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
2.28 ± 0.09 m
Spin3
nuclear quadrupole moment
tarikh penemuan1968
parity-

decay modeKeamatan (fizik)
β (β decay)100%
β SF (β-delayed fission)2.6%

239Pa

Nombor jisim239
nombor neutron148
jisim atom relatif
239.05726 ± 0.00021 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
1.8 ± 0.5 h
Spin1/2
nuclear quadrupole moment
0
tarikh penemuan1995
parity+

decay modeKeamatan (fizik)
β (β decay)100%

240Pa

Nombor jisim240
nombor neutron149
jisim atom relatif
240.061203 ± 0.000215 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin3
nuclear quadrupole moment
tarikh penemuan
parity+

decay modeKeamatan (fizik)
β (β decay)

241Pa

Nombor jisim241
nombor neutron150
jisim atom relatif
241.064134 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin1/2
nuclear quadrupole moment
0
tarikh penemuan
parity+

decay modeKeamatan (fizik)
β (β decay)
Protactinium-233

sejarah

penemu atau perekaFredrich Soddy, John Cranston, Otto Hahn, Lise Meitner
tempat penemuanEngland/France
tarikh penemuan1917
EtimologiGreek: proto and actinium (parent of actinium); it forms actinium when it radioactively decays.
sebutanPRO-tak-tin-eh-em (Inggeris)

sumber

Abundance
Abundance in Earth's crust
0.0000014 mg/kg
natural abundance (lautan)
0.00000000005 mg/L
natural abundance (Tubuh manusia)
0 %
natural abundance (Meteoroid)
natural abundance (Matahari)
Abundance in Universe
0 %

Nuclear Screening Constants