Neptunij

Neptunij (Np)

chemical element with the atomic number of 93 and symbol Np
Atomski broj93
Relativna atomska masa237
Maseni broj219
Skupina
Perioda7
Blokf
proton93 p+
neutron126 n0
elektron93 e-
Animated Bohrov model atoma of Np (Neptunij)

Physical Property

Atomski Radijus
175 pm
Molni volumen
Kovalentni Radijus
171 pm
Metallic Radius
Ionski radijus
110 pm
Crystal Radius
124 pm
Van der Waals radius
239 pm
gustoća
20,2 g/cm³
Atomic Radii Of The Elements: Neptunij0102030405060708090100110120130140150160170180190200210220230240pmAtomski RadijusKovalentni RadijusMetallic RadiusVan der Waals radius

Kemijsko Svojstvo

energija
proton affinity
Elektronski afinitet
ionization energy
ionization energy of Np (Neptunij)
Toplina isparivanja
336 kJ/mol
toplina taljenja
9,6 kJ/mol
standard enthalpy of formation
464,8 kJ/mol
elektron
Elektronska ljuska2, 8, 18, 32, 22, 9, 2
Bohrov model atoma: Np (Neptunij)
valence electron2
Lewis structure: Np (Neptunij)
electron configuration[Rn] 5f4 6d1 7s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f4 6d1 7s2
Enhanced Bohrov model atoma of Np (Neptunij)
Orbital Diagram of Np (Neptunij)
Oksidacijski broj2, 3, 4, 5, 6, 7
Elektronegativnost
1.3
Electrophilicity Index
fundamental state of matter
agregatno stanjeČvrsto
gaseous state of matter
Vrelište
Talište
917,15 K
critical pressure
critical temperature
Trojna točka
appearance
boja
Srebrna
appearancesilvery metallic
Indeks prelamanja
thermodynamic material property
Toplinska vodljivost
Toplinsko istezanje
molar heat capacity
Specifični toplinski kapacitet
heat capacity ratio
electrical properties
typeConductor
electrical conductivity
0,83 MS/m
Električna otpornost i provodnost
0,0000012 m Ω
Supravodljivost
Magnetizam
type
Magnetna susceptibilnost (Mass)
Magnetna susceptibilnost (Molar)
Magnetna susceptibilnost (Volume)
magnetic ordering
Curieva temperatura
Néel temperature
struktura
Kristalna strukturaJednostavna ortorombična (ORC)
lattice constant
4,72 Å
Lattice Anglesπ/2, π/2, π/2
mechanical property
Tvrdoća
bulk modulus
shear modulus
Youngov modul elastičnosti
Poissonov omjer
brzina zvuka
classification
KategorijaAktinoidi, 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
Nuklearni udarni presjek
180
Neutron Mass Absorption
Kvantni brojevi6L11/2
space group62 (Pnma)

Isotopes of Neptunium

Stabilni izotopi0
Nestabilni izotopi27
Natural Isotopes0

219Np

Maseni broj219
neutron number126
Relativna atomska masa
219,031601865 ± 0,000098732 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
570 ± 450 us
spin9/2
nuclear quadrupole moment
vrijeme otkrića ili izuma2015
Parnost-

decay modeintensity
α (α emission)100%

220Np

Maseni broj220
neutron number127
Relativna atomska masa
220,03271628 ± 0,000032977 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
29 ± 11 ns
spin1
nuclear quadrupole moment
vrijeme otkrića ili izuma2019
Parnost-

decay modeintensity
α (α emission)100%

221Np

Maseni broj221
neutron number128
Relativna atomska masa
221,03211 ± 0,000215 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin9/2
nuclear quadrupole moment
vrijeme otkrića ili izuma
Parnost-

decay modeintensity
α (α emission)

222Np

Maseni broj222
neutron number129
Relativna atomska masa
222,033574706 ± 0,000040849 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
480 ± 190 ns
spin1
nuclear quadrupole moment
vrijeme otkrića ili izuma2020
Parnost-

decay modeintensity
α (α emission)100%

223Np

Maseni broj223
neutron number130
Relativna atomska masa
223,03291334 ± 0,000088956 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
2,5 ± 0,8 us
spin9/2
nuclear quadrupole moment
vrijeme otkrića ili izuma2017
Parnost-

decay modeintensity
α (α emission)100%

224Np

Maseni broj224
neutron number131
Relativna atomska masa
224,03438803 ± 0,000031052 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
48 ± 19 us
spin2
nuclear quadrupole moment
vrijeme otkrića ili izuma2018
Parnost-

decay modeintensity
α (α emission)100%

225Np

Maseni broj225
neutron number132
Relativna atomska masa
225,033943422 ± 0,000098355 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
6,5 ± 3,5 ms
spin9/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1994
Parnost-

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

226Np

Maseni broj226
neutron number133
Relativna atomska masa
226,035230364 ± 0,000109568 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
35 ± 10 ms
spin
nuclear quadrupole moment
vrijeme otkrića ili izuma1990
Parnost

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

227Np

Maseni broj227
neutron number134
Relativna atomska masa
227,034975012 ± 0,000082651 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
510 ± 60 ms
spin5/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1990
Parnost+

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

228Np

Maseni broj228
neutron number135
Relativna atomska masa
228,036313 ± 0,000108 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
61,4 ± 1,4 s
spin4
nuclear quadrupole moment
vrijeme otkrića ili izuma1994
Parnost+

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

229Np

Maseni broj229
neutron number136
Relativna atomska masa
229,036287269 ± 0,000108618 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
4 ± 0,18 m
spin5/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1968
Parnost+

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

230Np

Maseni broj230
neutron number137
Relativna atomska masa
230,03782806 ± 0,000059051 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
4,6 ± 0,3 m
spin4
nuclear quadrupole moment
vrijeme otkrića ili izuma1968
Parnost+

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

231Np

Maseni broj231
neutron number138
Relativna atomska masa
231,038243598 ± 0,000054916 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
48,8 ± 0,2 m
spin5/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1950
Parnost+

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

232Np

Maseni broj232
neutron number139
Relativna atomska masa
232,040107 ± 0,000107 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
14,7 ± 0,3 m
spin5
nuclear quadrupole moment
vrijeme otkrića ili izuma1950
Parnost-

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

233Np

Maseni broj233
neutron number140
Relativna atomska masa
233,040739421 ± 0,000054729 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
36,2 ± 0,1 m
spin5/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1950
Parnost+

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

234Np

Maseni broj234
neutron number141
Relativna atomska masa
234,042893245 ± 0,000009014 Da
g-factor
0
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
4,4 ± 0,1 d
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1949
Parnost+

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

235Np

Maseni broj235
neutron number142
Relativna atomska masa
235,044061518 ± 0,00000149 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
396,1 ± 1,2 d
spin5/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1949
Parnost+

decay modeintensity
ϵ (electron capture)99.9974%
α (α emission)0.0026%

236Np

Maseni broj236
neutron number143
Relativna atomska masa
236,046568296 ± 0,000054129 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
153 ± 5 ky
spin6
nuclear quadrupole moment
vrijeme otkrića ili izuma1949
Parnost-

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

237Np

Maseni broj237
neutron number144
Relativna atomska masa
237,04817164 ± 0,000001201 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
2,144 ± 0,007 My
spin5/2
nuclear quadrupole moment
3,886 ± 0,006
vrijeme otkrića ili izuma1948
Parnost+

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

238Np

Maseni broj238
neutron number145
Relativna atomska masa
238,050944603 ± 0,00000122 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
2,099 ± 0,002 d
spin2
nuclear quadrupole moment
vrijeme otkrića ili izuma1949
Parnost+

decay modeintensity
β (β decay)100%

239Np

Maseni broj239
neutron number146
Relativna atomska masa
239,052937538 ± 0,000001406 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
2,356 ± 0,003 d
spin5/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1940
Parnost+

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

240Np

Maseni broj240
neutron number147
Relativna atomska masa
240,056163778 ± 0,000018284 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
61,9 ± 0,2 m
spin5
nuclear quadrupole moment
vrijeme otkrića ili izuma1953
Parnost+

decay modeintensity
β (β decay)100%

241Np

Maseni broj241
neutron number148
Relativna atomska masa
241,058309671 ± 0,00010736 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
13,9 ± 0,2 m
spin5/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1959
Parnost+

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

242Np

Maseni broj242
neutron number149
Relativna atomska masa
242,061639548 ± 0,000214712 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
2,2 ± 0,2 m
spin1
nuclear quadrupole moment
vrijeme otkrića ili izuma1979
Parnost+

decay modeintensity
β (β decay)100%

243Np

Maseni broj243
neutron number150
Relativna atomska masa
243,064204 ± 0,000034 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
1,85 ± 0,15 m
spin5/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1979
Parnost+

decay modeintensity
β (β decay)100%

244Np

Maseni broj244
neutron number151
Relativna atomska masa
244,067891 ± 0,000107 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
2,29 ± 0,16 m
spin7
nuclear quadrupole moment
vrijeme otkrića ili izuma1987
Parnost-

decay modeintensity
β (β decay)100%

245Np

Maseni broj245
neutron number152
Relativna atomska masa
245,070693 ± 0,000215 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin5/2
nuclear quadrupole moment
vrijeme otkrića ili izuma
Parnost+

decay modeintensity
β (β decay)
Neptunium2

povijest

otkrio/izumioE.M. McMillan, P.H. Abelson
location of discoveryUnited States
vrijeme otkrića ili izuma1940
EtimologijaNamed for the planet Neptune.
pronunciationnep-TOO-ni-em (engleski)

source

Obilnost
Zastupljenost u Zemljinoj kori
natural abundance (ocean)
natural abundance (tijelo)
0 %
natural abundance (meteoroid)
0 %
natural abundance (Sunce)
0 %
Zastupljenost u svemiru
0 %

Nuclear Screening Constants