Neptunium

Neptunium (Np)

chemical element with the atomic number of 93 and symbol Np
Atomic Number93
Atomic Weight237
Nombor jisim219
Group
Period7
Blockf
proton93 p+
neutron126 n0
Elektron93 e-
Animated Model Bohr of Np (Neptunium)

Sifat Fizikal

Jejari Atom
175 pm
molar volume
Jejari kovalen
171 pm
Metallic Radius
ionic radius
110 pm
Crystal Radius
124 pm
Jejari van der Waals
239 pm
ketumpatan
20.2 g/cm³
Atomic Radii Of The Elements: Neptunium0102030405060708090100110120130140150160170180190200210220230240pmJejari AtomJejari KovalenMetallic RadiusJejari van der Waals

Sifat Kimia

tenaga
proton affinity
Pertalian elektron
ionization energy
ionization energy of Np (Neptunium)
Entalpi pengewapan
336 kJ/mol
entalpi pelakuran
9.6 kJ/mol
standard enthalpy of formation
464.8 kJ/mol
Elektron
Petala elektron2, 8, 18, 32, 22, 9, 2
Model Bohr: Np (Neptunium)
Elektron valens2
Teori ion Lewis: Np (Neptunium)
tatarajah elektron[Rn] 5f4 6d1 7s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f4 6d1 7s2
Enhanced Model Bohr of Np (Neptunium)
Orbital Diagram of Np (Neptunium)
Keadaan pengoksidaan2, 3, 4, 5, 6, 7
Keelektronegatifan
1.3
Electrophilicity Index
keadaan jirim asas
fasa jirimSolid
gaseous state of matter
Boiling Point
Melting Point
917.15 K
critical pressure
critical temperature
triple point
rupa
warna
Silver
rupasilvery metallic
indeks biasan
sifat bahan
Thermal Conductivity
Pengembangan terma
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
typeConductor
Kekonduksian elektrik
0.83 MS/m
Kerintangan dan kekonduksian elektrik
0.0000012 m Ω
Kesuperkonduksian
kemagnetan
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Suhu Curie
Néel temperature
struktur
Crystal StructureSimple Orthorhombic (ORC)
lattice constant
4.72 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 Number37
Mendeleev Number22
Pettifor Number44
Geochemical Class
Goldschmidt classificationsynthetic

other

Gas Basicity
polarizability
151 ± 20 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
180
Neutron Mass Absorption
Nombor kuantum6L11/2
space group62 (Pnma)

Isotopes of Neptunium

Stable Isotopes0
Unstable Isotopes27
Natural Isotopes0

219Np

Nombor jisim219
nombor neutron126
jisim atom relatif
219.031601865 ± 0.000098732 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
570 ± 450 us
Spin9/2
nuclear quadrupole moment
tarikh penemuan2015
parity-

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

220Np

Nombor jisim220
nombor neutron127
jisim atom relatif
220.03271628 ± 0.000032977 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
29 ± 11 ns
Spin1
nuclear quadrupole moment
tarikh penemuan2019
parity-

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

221Np

Nombor jisim221
nombor neutron128
jisim atom relatif
221.03211 ± 0.000215 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin9/2
nuclear quadrupole moment
tarikh penemuan
parity-

decay modeKeamatan (fizik)
α (α emission)

222Np

Nombor jisim222
nombor neutron129
jisim atom relatif
222.033574706 ± 0.000040849 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
480 ± 190 ns
Spin1
nuclear quadrupole moment
tarikh penemuan2020
parity-

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

223Np

Nombor jisim223
nombor neutron130
jisim atom relatif
223.03291334 ± 0.000088956 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
2.5 ± 0.8 us
Spin9/2
nuclear quadrupole moment
tarikh penemuan2017
parity-

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

224Np

Nombor jisim224
nombor neutron131
jisim atom relatif
224.03438803 ± 0.000031052 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
48 ± 19 us
Spin2
nuclear quadrupole moment
tarikh penemuan2018
parity-

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

225Np

Nombor jisim225
nombor neutron132
jisim atom relatif
225.033943422 ± 0.000098355 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
6.5 ± 3.5 ms
Spin9/2
nuclear quadrupole moment
tarikh penemuan1994
parity-

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

226Np

Nombor jisim226
nombor neutron133
jisim atom relatif
226.035230364 ± 0.000109568 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
35 ± 10 ms
Spin
nuclear quadrupole moment
tarikh penemuan1990
parity

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

227Np

Nombor jisim227
nombor neutron134
jisim atom relatif
227.034975012 ± 0.000082651 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
510 ± 60 ms
Spin5/2
nuclear quadrupole moment
tarikh penemuan1990
parity+

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

228Np

Nombor jisim228
nombor neutron135
jisim atom relatif
228.036313 ± 0.000108 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
61.4 ± 1.4 s
Spin4
nuclear quadrupole moment
tarikh penemuan1994
parity+

decay modeKeamatan (fizik)
ϵ (electron capture)59%
α (α emission)41%
β+ SF (β+-delayed fission)0.012%

229Np

Nombor jisim229
nombor neutron136
jisim atom relatif
229.036287269 ± 0.000108618 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
4 ± 0.18 m
Spin5/2
nuclear quadrupole moment
tarikh penemuan1968
parity+

decay modeKeamatan (fizik)
α (α emission)68%
β+ (β+ decay; β+ = ϵ + e+)

230Np

Nombor jisim230
nombor neutron137
jisim atom relatif
230.03782806 ± 0.000059051 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
4.6 ± 0.3 m
Spin4
nuclear quadrupole moment
tarikh penemuan1968
parity+

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)97%
α (α emission)3%

231Np

Nombor jisim231
nombor neutron138
jisim atom relatif
231.038243598 ± 0.000054916 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
48.8 ± 0.2 m
Spin5/2
nuclear quadrupole moment
tarikh penemuan1950
parity+

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)98%
α (α emission)2%

232Np

Nombor jisim232
nombor neutron139
jisim atom relatif
232.040107 ± 0.000107 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
14.7 ± 0.3 m
Spin5
nuclear quadrupole moment
tarikh penemuan1950
parity-

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

233Np

Nombor jisim233
nombor neutron140
jisim atom relatif
233.040739421 ± 0.000054729 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
36.2 ± 0.1 m
Spin5/2
nuclear quadrupole moment
tarikh penemuan1950
parity+

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)0.0007%

234Np

Nombor jisim234
nombor neutron141
jisim atom relatif
234.042893245 ± 0.000009014 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
4.4 ± 0.1 d
Spin0
nuclear quadrupole moment
0
tarikh penemuan1949
parity+

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

235Np

Nombor jisim235
nombor neutron142
jisim atom relatif
235.044061518 ± 0.00000149 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
396.1 ± 1.2 d
Spin5/2
nuclear quadrupole moment
tarikh penemuan1949
parity+

decay modeKeamatan (fizik)
ϵ (electron capture)99.9974%
α (α emission)0.0026%

236Np

Nombor jisim236
nombor neutron143
jisim atom relatif
236.046568296 ± 0.000054129 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
153 ± 5 ky
Spin6
nuclear quadrupole moment
tarikh penemuan1949
parity-

decay modeKeamatan (fizik)
ϵ (electron capture)86.3%
β (β decay)13.5%
α (α emission)0.16%

237Np

Nombor jisim237
nombor neutron144
jisim atom relatif
237.04817164 ± 0.000001201 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
2.144 ± 0.007 My
Spin5/2
nuclear quadrupole moment
3.886 ± 0.006
tarikh penemuan1948
parity+

decay modeKeamatan (fizik)
α (α emission)100%
SF (spontaneous fission)2%
30Mg4%

238Np

Nombor jisim238
nombor neutron145
jisim atom relatif
238.050944603 ± 0.00000122 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
2.099 ± 0.002 d
Spin2
nuclear quadrupole moment
tarikh penemuan1949
parity+

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

239Np

Nombor jisim239
nombor neutron146
jisim atom relatif
239.052937538 ± 0.000001406 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
2.356 ± 0.003 d
Spin5/2
nuclear quadrupole moment
tarikh penemuan1940
parity+

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

240Np

Nombor jisim240
nombor neutron147
jisim atom relatif
240.056163778 ± 0.000018284 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
61.9 ± 0.2 m
Spin5
nuclear quadrupole moment
tarikh penemuan1953
parity+

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

241Np

Nombor jisim241
nombor neutron148
jisim atom relatif
241.058309671 ± 0.00010736 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
13.9 ± 0.2 m
Spin5/2
nuclear quadrupole moment
tarikh penemuan1959
parity+

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

242Np

Nombor jisim242
nombor neutron149
jisim atom relatif
242.061639548 ± 0.000214712 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
2.2 ± 0.2 m
Spin1
nuclear quadrupole moment
tarikh penemuan1979
parity+

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

243Np

Nombor jisim243
nombor neutron150
jisim atom relatif
243.064204 ± 0.000034 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
1.85 ± 0.15 m
Spin5/2
nuclear quadrupole moment
tarikh penemuan1979
parity+

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

244Np

Nombor jisim244
nombor neutron151
jisim atom relatif
244.067891 ± 0.000107 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
2.29 ± 0.16 m
Spin7
nuclear quadrupole moment
tarikh penemuan1987
parity-

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

245Np

Nombor jisim245
nombor neutron152
jisim atom relatif
245.070693 ± 0.000215 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin5/2
nuclear quadrupole moment
tarikh penemuan
parity+

decay modeKeamatan (fizik)
β (β decay)
Neptunium2

sejarah

penemu atau perekaE.M. McMillan, P.H. Abelson
tempat penemuanUnited States
tarikh penemuan1940
EtimologiNamed for the planet Neptune.
sebutannep-TOO-ni-em (Inggeris)

sumber

Abundance
Abundance in Earth's crust
natural abundance (lautan)
natural abundance (Tubuh manusia)
0 %
natural abundance (Meteoroid)
0 %
natural abundance (Matahari)
0 %
Abundance in Universe
0 %

Nuclear Screening Constants