Protaktiniy

Protaktiniy (Pa)

element with symbol Pa and atomic number of 91
Atomic Number91
Atomic Weight231.03588
mass number231
Group
Period7
Blockf
Proton91 p+
Neytron140 n0
Elektron91 e-
Animated Bohr model of Pa (Protaktiniy)

Fizik Xossa

Atom Radiusi
180 pm
Molyar hajm
Kovalentlik Radiusi
169 pm
Metallic Radius
Ion radiuslar
104 pm
Crystal Radius
118 pm
Van der Waals radius
243 pm
density
15,4 g/cm³
Atomic Radii Of The Elements: Protaktiniy0102030405060708090100110120130140150160170180190200210220230240250pmAtom RadiusiKovalentlik RadiusiMetallic RadiusVan der Waals radius

Chemical Property

energiya
proton affinity
electron affinity
ionization energy
ionization energy of Pa (Protaktiniy)
Solishtirma qaynash issiqligi
481,2 kJ/mol
solishtirma erish issiqligi
16,7 kJ/mol
standard enthalpy of formation
563 kJ/mol
Elektron
Ion asboblar2, 8, 18, 32, 20, 9, 2
Bohr model: Pa (Protaktiniy)
valence electron2
Lewis structure: Pa (Protaktiniy)
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 Bohr model of Pa (Protaktiniy)
Orbital Diagram of Pa (Protaktiniy)
Oksidlanish darajasi2, 3, 4, 5
Elektrmanfiylik
1.5
Electrophilicity Index
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
Melting Point
1 845,15 K
critical pressure
critical temperature
triple point
appearance
Rang
Silver
appearancebright, silvery metallic luster
refractive index
thermodynamic material property
Thermal Conductivity
Issiqlikdan kengayish
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
typeConductor
electrical conductivity
5,6 MS/m
electrical resistivity
0,00000018 m Ω
superconductivity
1,41 K
Magnetizm
typeparamagnetic
magnetic susceptibility (Mass)
0,0000000325 m³/Kg
magnetic susceptibility (Molar)
0,000000007509 m³/mol
magnetic susceptibility (Volume)
0,0004995
magnetic ordering
Kyuri nuqtasi
Néel temperature
Tuzilma
Crystal StructureCentered Tetragonal (TET)
Kristall panjara davri
3,92 Å
Lattice Anglesπ/2, π/2, π/2
mechanical property
Qattiqlik
bulk modulus
shear modulus
Yung moduli
Poisson's ratio
Tovush tezligi
klassifikatsiya
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
Atom kvant sonlari4K11/2
space group139 (I4/mmm)

Isotopes of Protactinium

Stable Isotopes0
Unstable Isotopes31
Natural Isotopes1

211Pa

mass number211
neutron number120
Nisbiy atom massa
211,023674036 ± 0,000074581 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
6 ± 3 ms
spin9/2
nuclear quadrupole moment
time of discovery or invention2006
parity-

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

212Pa

mass number212
neutron number121
Nisbiy atom massa
212,023184819 ± 0,000094047 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
5,8 ± 1,9 ms
spin3
nuclear quadrupole moment
time of discovery or invention1997
parity+

decay modeintensity
α (α emission)100%

213Pa

mass number213
neutron number122
Nisbiy atom massa
213,021099644 ± 0,000061374 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
7,4 ± 2,4 ms
spin9/2
nuclear quadrupole moment
time of discovery or invention1995
parity-

decay modeintensity
α (α emission)100%

214Pa

mass number214
neutron number123
Nisbiy atom massa
214,020891055 ± 0,00008718 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
17 ± 3 ms
spin7
nuclear quadrupole moment
time of discovery or invention1995
parity+

decay modeintensity
α (α emission)100%

215Pa

mass number215
neutron number124
Nisbiy atom massa
215,019113955 ± 0,000088513 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
14 ± 2 ms
spin9/2
nuclear quadrupole moment
time of discovery or invention1979
parity-

decay modeintensity
α (α emission)100%

216Pa

mass number216
neutron number125
Nisbiy atom massa
216,019134633 ± 0,000026459 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
105 ± 12 ms
spin5
nuclear quadrupole moment
time of discovery or invention1972
parity+

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

217Pa

mass number217
neutron number126
Nisbiy atom massa
217,018309024 ± 0,000013417 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
3,8 ± 0,2 ms
spin9/2
nuclear quadrupole moment
time of discovery or invention1968
parity-

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

218Pa

mass number218
neutron number127
Nisbiy atom massa
218,020021133 ± 0,000019158 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
108 ± 5 us
spin8
nuclear quadrupole moment
time of discovery or invention1979
parity-

decay modeintensity
α (α emission)100%

219Pa

mass number219
neutron number128
Nisbiy atom massa
219,019949909 ± 0,000074831 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
56 ± 9 ns
spin9/2
nuclear quadrupole moment
time of discovery or invention2005
parity-

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

220Pa

mass number220
neutron number129
Nisbiy atom massa
220,021769753 ± 0,000015732 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
0,85 ± 0,06 us
spin1
nuclear quadrupole moment
time of discovery or invention2005
parity-

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

221Pa

mass number221
neutron number130
Nisbiy atom massa
221,021873393 ± 0,000063746 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
5,9 ± 1,7 us
spin9/2
nuclear quadrupole moment
time of discovery or invention1983
parity-

decay modeintensity
α (α emission)100%

222Pa

mass number222
neutron number131
Nisbiy atom massa
222,023687064 ± 0,000092975 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
3,8 ± 0,2 ms
spin1
nuclear quadrupole moment
time of discovery or invention1970
parity-

decay modeintensity
α (α emission)100%

223Pa

mass number223
neutron number132
Nisbiy atom massa
223,023980414 ± 0,000081193 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
5,3 ± 0,3 ms
spin9/2
nuclear quadrupole moment
time of discovery or invention1970
parity-

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

224Pa

mass number224
neutron number133
Nisbiy atom massa
224,025617286 ± 0,000008145 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
844 ± 19 ms
spin5
nuclear quadrupole moment
time of discovery or invention1958
parity-

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

225Pa

mass number225
neutron number134
Nisbiy atom massa
225,026147927 ± 0,000087887 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
1,71 ± 0,1 s
spin5/2
nuclear quadrupole moment
time of discovery or invention1958
parity-

decay modeintensity
α (α emission)100%

226Pa

mass number226
neutron number135
Nisbiy atom massa
226,027948217 ± 0,000012037 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
1,8 ± 0,2 m
spin1
nuclear quadrupole moment
time of discovery or invention1949
parity-

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

227Pa

mass number227
neutron number136
Nisbiy atom massa
227,028803586 ± 0,000007797 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
38,3 ± 0,3 m
spin5/2
nuclear quadrupole moment
time of discovery or invention1948
parity-

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

228Pa

mass number228
neutron number137
Nisbiy atom massa
228,031050758 ± 0,000004659 Da
g-factor
1,1666666666667 ± 0,16666666666667
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
22 ± 1 h
spin3
nuclear quadrupole moment
time of discovery or invention1948
parity+

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

229Pa

mass number229
neutron number138
Nisbiy atom massa
229,032095585 ± 0,000003521 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
1,55 ± 0,04 d
spin5/2
nuclear quadrupole moment
time of discovery or invention1949
parity+

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

230Pa

mass number230
neutron number139
Nisbiy atom massa
230,034539717 ± 0,000003261 Da
g-factor
1 ± 0,1
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
17,4 ± 0,5 d
spin2
nuclear quadrupole moment
time of discovery or invention1948
parity-

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

231Pa

mass number231
neutron number140
Nisbiy atom massa
231,0358825 ± 0,000001901 Da
g-factor
1,3266666666667 ± 0,013333333333333
natural abundance
100
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
32,65 ± 0,2 ky
spin3/2
nuclear quadrupole moment
-1,72 ± 0,05
time of discovery or invention1918
parity-

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

232Pa

mass number232
neutron number141
Nisbiy atom massa
232,038590205 ± 0,000008206 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
1,32 ± 0,02 d
spin2
nuclear quadrupole moment
time of discovery or invention1949
parity-

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

233Pa

mass number233
neutron number142
Nisbiy atom massa
233,040246535 ± 0,000001433 Da
g-factor
2,6666666666667 ± 0,46666666666667
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
26,975 ± 0,013 d
spin3/2
nuclear quadrupole moment
-3 ± 0,4
time of discovery or invention1938
parity-

decay modeintensity
β (β decay)100%

234Pa

mass number234
neutron number143
Nisbiy atom massa
234,043305555 ± 0,000004395 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
6,7 ± 0,05 h
spin4
nuclear quadrupole moment
time of discovery or invention1913
parity+

decay modeintensity
β (β decay)100%

235Pa

mass number235
neutron number144
Nisbiy atom massa
235,045399 ± 0,000015 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
24,4 ± 0,2 m
spin3/2
nuclear quadrupole moment
time of discovery or invention1950
parity-

decay modeintensity
β (β decay)100%

236Pa

mass number236
neutron number145
Nisbiy atom massa
236,048668 ± 0,000015 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
9,1 ± 0,1 m
spin1
nuclear quadrupole moment
time of discovery or invention1963
parity

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

237Pa

mass number237
neutron number146
Nisbiy atom massa
237,051023 ± 0,000014 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
8,7 ± 0,2 m
spin1/2
nuclear quadrupole moment
0
time of discovery or invention1954
parity+

decay modeintensity
β (β decay)100%

238Pa

mass number238
neutron number147
Nisbiy atom massa
238,054637 ± 0,000017 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
2,28 ± 0,09 m
spin3
nuclear quadrupole moment
time of discovery or invention1968
parity-

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

239Pa

mass number239
neutron number148
Nisbiy atom massa
239,05726 ± 0,00021 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
1,8 ± 0,5 h
spin1/2
nuclear quadrupole moment
0
time of discovery or invention1995
parity+

decay modeintensity
β (β decay)100%

240Pa

mass number240
neutron number149
Nisbiy atom massa
240,061203 ± 0,000215 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
spin3
nuclear quadrupole moment
time of discovery or invention
parity+

decay modeintensity
β (β decay)

241Pa

mass number241
neutron number150
Nisbiy atom massa
241,064134 ± 0,000322 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
spin1/2
nuclear quadrupole moment
0
time of discovery or invention
parity+

decay modeintensity
β (β decay)
Protactinium-233

tarix

discoverer or inventorFredrich Soddy, John Cranston, Otto Hahn, Lise Meitner
location of discoveryEngland/France
time of discovery or invention1917
EtimologiyaGreek: proto and actinium (parent of actinium); it forms actinium when it radioactively decays.
pronunciationPRO-tak-tin-eh-em (inglizcha)

source

Abundance
Abundance in Earth's crust
0,0000014 mg/kg
natural abundance (Okean)
0,00000000005 mg/L
natural abundance (Inson tanasi)
0 %
natural abundance (Meteoroid)
natural abundance (Quyosh)
Abundance in Universe
0 %

Nuclear Screening Constants